HTC EVO 4G :: Attempted 2.2 To 2.1 Downgrade
Aug 31, 2010
So i got to the step on XDAweb's guide to root 2.2 where: cd /data/local./flash_image misc /sdcard/mtd-eng.img then reboot the phone. it went through flawlessly and it rebooted. now, i have no video on the screen, its all black. i pulled the battery, i tried to abd to it, but it said device not found. i can hear the startup chime, feel the hauptic force feedback, so i know the phone itself is working, but for some reason the screen crapped out! I use this phone for work as an IT professional and im kinda up a creek.
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Jun 15, 2010
I am new to Android and am trying to create a very basic app that calculates and displays the GCF of two numbers entered by the user. Here is a copy of my GCF.java:
CODE:........................
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Aug 29, 2010
I followed that Universal Root guide and have gotten stuck at the recovery console. Up + Power starts the phone's normal OS. When I try to boot from Down + Power and then push Vol + I can't get into the Amon recovery. Am I missing something here? It checks for something, then I have FASTBOOT, RECOVERY, CLEAR STORAGE, and SIMLOCK.
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May 1, 2014
I have a Samsung Galaxy S2 SCH-R760.Tried to update phone from standard IceCreamSandwich to Jelly Bean via Samsung provided Simple Upgrade Tool. Very new to flashing phones, forgot to check model number, first attempt failed. Eventually got the right one (difficult to do with my model apparently), and the mobile network wouldn't work. Was told to reset APN, could not find it anywhere in the system.
Got fed up and decided to revert back to original OS, which failed. Waited overnight (it was late) with the phone off. Found the right file (just going to go back to Jelly Bean), however whenever I attempted to get into recovery mode it told me there was not enough power and to charge the phone. Phone was plugged in, this happened a couple of times. Now after the phone has been plugged in for well over 3 hours I cannot get the phone to power on or anything, it absolutely will not respond. Attempted to use Kies, will not recognize my phone model and is waiting for the phone to be connected anyway. When plugged in (trying/using various different cords) I have a little faint blue light flashing in the top left corner of the phone (not the phone screen).
The phone has been in excellent condition up until this point, and I have little reason to believe that my battery just suddenly went 100% bad after showing no signs of decay in recent weeks.
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Aug 10, 2011
So my friend locked my phone out. I Knew the gmail account linked to the phone but i forgot the password. I resetted the password on a computer but when i enter the new password in the phone it doesn't work.
I tried all my various passwords, including the null and it didn't work.
I don't remember if my phone sends notifications for emails because i only made the gmail account when i bought the phone (therefore it isn't my primary account and no one sends emails to it).I have wifi connection and also 3g connection on the phone.
I am thinking the gmail account did not sync, therefore my new password isn't working. How can i sync the account, or do i have a workaround on getting this to work?
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Aug 24, 2009
I just got a Galaxy (i7500) and I'm trying to connect it to the Samsung PC Studio 3, running on Asus EeePC 1000HE, Win XP Home.
1.) Model Number ? _Galaxy
2.) Firmware Version ? 1.5
3.) Baseband Version ? I7500JIIGC
4.) Kernel Version ? 2.6.27
5.) Build Number ? 76XXCSDCBALUM6375
I'm using the phone in Israel, provider is Cellcom, phone is unlocked.
Problem:
When trying to connect the phone to the netbook I attempted BT and USB - both failed.
In BT, the PC Studio finds the Galaxy and prompts to type a PIN to authenticate. I type 1234, hit 'Send'. On the handset I get a message saying another device is trying to connect, but with a random 6-digits PIN, which I cannot edit - hence pairing fails. I tried vice-versa (handset first, type the 6-digits to the PC Studio, hit 'Send') - same results.
In USB mode, PC Studio is always 'Not connected', even though the phone is connected, in Data Transfer mode. I also tried just connecting the USB without 'Data transfer' - same result. No connection.
I tried pairing Nokia E71 with the Galaxy, entered at the E71 1234 as the pin, then 1234 at the Galaxy - and it worked fine. Any idea how to fix the PC Studio problem? I want to sync my Contacts/Calendar from Outlook, and keeping them there (not importing all my data to Google..)
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Jul 5, 2010
I was in the process of rooting.I've tried everything, looked at different threads from many different websites, turned it off, pulled battery, tried charging it via wall charger, everything. Am I totally bricked?
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Oct 14, 2010
I connected my X10 to my computer two days ago and was prompted to perform a software update which I chose to do believing it would get rid of some ongoing issues I've been having with the phone
The computer found the phone ok, then PC companion prompted me to disconnect the phone from the USB cable, making sure the battery was at least 50% full (it was), switch off the phone and wait at least 5 seconds (waited 30), then plug it back into the USB while pressing and holding the "Back" key.
All of this I did according to instructions, and the information on the screen said it was downloading the update, but broke down and stated that an unexpected error occured during installation. I was prompted to try again, which I did, same thing happened.
At this point the phone just shut down and point blank refuses to turn back on. I tried removing the battery and putting it back in, nothing, I also tried to charge it thinking maybe it was drained during the attempted update (power surge?) and again, nothing.
When I try to switch it back on while it is not connected to a charger or the computer the light flashes red three times. When I connect it to the computer it turns green for a few seconds then goes off again. Currently it's flashing red every few seconds, but will still not switch on.
My biggest problem is - if I take it in to be serviced, will they be able to retrieve my contacts from the phone memory? A backup was done but I no longer have access to this either as I had to reinstall my computer system and this data disappeared (i have a bunch of empty SE folders on my backup disk)
I'm in Croatia and support here are very, very fond of flashing the software as the easiest way out and swearing blind there is nothing they can do to keep the data - if nothing else I'd appreciate feedback from anyone else who has experienced this problem and got their phone back with contacts intact so I can argue more coherently when I take it in to the store tomorrow
I honestly don't care about any of the other data than my contacts, the rest is replaceable, but I have no way of contacting a lot of the people to get their numbers again.
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Aug 21, 2010
I attempted to use the new build.prop file to fix the market issue where some paid apps were not found for download.
Here is the process I used:
Download build.prop, place it on SD card. Use Root Explorer to copy build.prop into system/Deleted old build.prop file from system/ (I made a copy of the original and placed it in a folder on my SD card as a backup) Turned phone off. Turned phone back on and got to the Motorola logo, then the screen is black (backlight is still working, the screen is technically on, there just isn't anything on it).
Phone never gets to the boot animation and will not boot back up. Anyone know how I can fix this without having to flash the SBF 2.1 file again and re-root, install 2.2 update.zip, and download/setup all of my apps?
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Nov 27, 2013
I am trying to get a friends Nexus 7 up and running. I recently rooted it and installed the custom recovery using my Mac with this guide while the tablet was on 4.3. All was well, but then my friend was given the option to install the 4.4 Kitkat update. After the update, the tablet has been unable to boot - it simply hangs at the startup animation. I am able to enter the recovery boot loader, and enter options to restore from a .zip, however I have no way of accessing the tablet's memory from my computer to put the original operating system back on it- although I think it could be done from Terminal, I am not well versed in command prompts.
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Jun 12, 2010
Got Root? EVO 4G Rooting Instructions Released | Android News, Reviews, Applications, Games, Phones, Devices, Tips, Hacks, Videos, Podcasts - Android Police
[TUTORIAL] How To Root The HTC EVO ~ Part-1 / - xda-developers
and on another android forum. every thread is huge with a TON of people having problems and answers scattered everywhere. Is there one place with an updated guide for windows and mac or just mac that officially roots so I can install custom ROMs? What about downgrading? I've been bouncing all around to different forums and guides and none are clear. The XDA thead by toast also says his root doesn't allow custom ROMs but I've seen custom ROMs mentioning toast?
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Nov 27, 2010
Found this at xda-developers - View Single Post - [ROOT] unrEVOked 3.21: one-click root for Froyo, no downgrading Worked perfectly for me! I have s-on and now I am back to 2.2 with root.
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Sep 11, 2010
I saw a similar thread, but didn't see the answer I was looking for. I did the OTA upgrade to 2.2 last week. Having some problems, so I thought I might roll it back to 2.1. Is doing the factory reset the same as downgrading to 2.1? OR is there some other way to downgrade? If so, could somebody provide step by step instructions?
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Sep 20, 2010
How do I downgrade Lg eve to a lower version? I want to follow this guide: Installation | OpenEtna but it says i need to downgrade.
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Sep 24, 2010
My data roaming isn't working i can make calls and stuff but not internet, i heard a prl update did this so can anyone show me how to downgrade prl? and anyone confirm a prl that works with data roaming?
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Sep 4, 2010
I have a Motorola Droid 2 on Verizon. It is not rooted, just a basic phone with a few apps. I'm currently running Froyo 2.2 and I would like to get back to 2.1.1, or frankly any version other than 2.2. I got my phone last year in November and it was running version 2.0. Since then I have upgraded to 2.1 and 2.1.1. Around a month ago, the 2.2 update was pushed to my phone, and after reading great reviews about it, I was excited to upgrade. I allowed the update to my phone and since then I have experienced constant problems with it. Another "update" was pushed to my phone a week or so ago, but I checked the version after the update and it was still 2.2, so I'm not sure if it actually did anything, and I still have the same problems.
Since updating, my web browser freezes up regularly making it unable to use. Some of the applications I use frequently crash or freeze up (such as Pandora). The phone is much less responsive; I sometimes have to just put it down and wait for it to start responding to input again. When I try to select a text message to read, most of the time it enters a different thread than the one I selected. I'll then have to back out and try to select the text message I want to read again, and it always works the second time. The phone often misses calls; it doesn't ring or anything. I'll just get a voicemail, which is the only way I know I missed the call; no other notification or anything. It no longer plays WAV files. About half the time I try to load a YouTube video, or even launch the YouTube application, I receive a message that there is no internet connection, even though I'm using the web browser and I know I have an internet connection. Before upgrading, I almost never rebooted my phone, but now I have to rebooted multiple times a week because of the freezing and crashing of apps. Basically it has went from a smartphone, to just a phone. I am so frustrated. If I can't downgrade, I think I'm just going to have to get a different phone. I have found posts on how to downgrade other phones from 2.2 to 2.1, but I'm not sure if they work on the Motorola Droid 2, and I don't want to risk being completely without a phone, since I use it for work and personal use. The other guides I have found for the downgrade seem to specify they are for phones other than the Motorola Droid 2.
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Jul 3, 2010
I want to root my phone, stupid update. Any possible way I can downgrade to the previous update?
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Aug 6, 2010
I have done a decent bit of Googling and searching in this forum for this answer. I was wondering if there was a way to downgrade from the manual update 2.2 back to the 2.1. I have been having such a hard time with my Wifi since I upgraded I just would like to be able to go back to a better working version. I tried putting the manual 2.1 update.zip in and doing that, but it just says "error in sdcard update.zip status 2" I couldn't find what status 2 means, but I imagine in layman's terms it means something like "You can't downgrade like that dummy!" So, I fear that I am just stuck until our update gets updated.
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Nov 8, 2010
i am not crazy for doing this. I am having problems with my 2.2 as i didnt update it via kies. I need to downgrade to 2.1 now so i can re upgrade. How can i do this?
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Jun 7, 2010
I have a n HTC hero and I am trying to root it, but nothing is working. I am on 2.1 currently, when I get to this code in the guide /data/local/asroot2 /system/bin/sh
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Sep 28, 2010
Is it possible to do this yet? I really want to try the new Desire HD Rom and with the current software i dont think im able to root, therefore i would need to downgrade my HBOOT??
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May 3, 2010
When I try to place the recovery.img in the /tools folder, it tells me that there is already a file named 'recovery.img'. Should I go ahead and have it replaced by this new one?
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May 27, 2010
I followed all of these instructions to downgrade my wife's rooted 2.1 and it seems to have worked fine. I've got it back to 1.5. She wanted the OTA upgrade because the 2.1 rooted version was giving her the silent call issue. Again, I went back to 1.5 because I wanted the OTA update. After doing this, she got the OTA update notification, it downloaded, processed and then failed. I've also tried to install the OTA manually and it won't work. The hboot is version 1.47. Has anybody had success downgrading their 2.1 rooted install to 1.5 and then getting the OTA update to work? I'm back at 1.5. What should I do next to get the OTA update working?
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Aug 9, 2010
I rooted my Incredible, and now I have it running the Froyo leak. Unfortunately, I didn't install radio 2.x before doing this, so my camcorder doesn't function properly. Is there a way to downgrade from Froyo to 2.1, install radio 2.x, then reinstall Froyo?
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Sep 20, 2010
There have already been several requests for information on how to downgrade back to the official 2.2. The following process will remove root. Whether you need to return a phone or you just want to clean the slate and go back to stock, here is how to get there:
Note: Your SD card MUST be formatted to FAT32 before proceeding. The file will not be recognized otherwise. If you have yet to format, remember that formatting wipes the card. Be sure to copy/move your SD contents to a safe place (PC desktop) and replace after the formatting process. I will not go into the procedure in this thread as it is easily found with a Google search.
1.) Need to return a phone and currently have S-Off? (aka Unrevoked Forever) If so, please visit public:forever [RootWiki] where you can download the latest S-On tool and the process to load to your phone. If you want to keep S-Off and just return to the official 2.2, skip to step 2.
2.) Download the 2.2 PB31IMG.zip (extracted from the official 2.2 RUU)
Mirror 1 (Credit and thanks to Doug Piston for hosting)
Mirror 2
Note the file size (172 MB) and the MD5 (31BB1611A0FA8197D447C0438426717E) to ensure a successful download and file integrity. If you have questions about how to verify MD5, please see post #2 of this thread.
3.) Attach phone to PC with USB debugging on and in disk drive mode.
4.) Access the SD storage and drag the PB31IMG.zip from the desktop onto the root of the SD card (any open area, do not place into a folder).
5.) Swipe down notification bar on phone and change to charge only.
6.) Unplug phone from PC and turn off phone.
7.) Hold volume down while pressing power button to enter hboot.
8.) PB31IMG.zip should be automatically recognized in hboot. Press volume up to continue with update. Do NOT interrupt.
9.) When finished, reboot to stock 2.2 and verify the following information at Menu > Settings > About Phone:
Android Version: 2.2
Baseband Version: 2.15.00.07.28
Software Number: 3.26.605.1
10.) Remove the PB31IMG.zip from the SD card to avoid an inadvertant reload in the future. You are now unrooted and on stock 2.2
Also adding the RUU option for those that are interested. Thanks again to Doug for the upload/host. For those new to RUU, download to a PC and run from there:
http://dougpiston.com/files/RUU/RUU_Incredible_C_Froyo_VERIZON_WWE_3.26.605.1_Radi o_2.15.00.07.28_2k4k_NV_1.70_PRL58006_release_1520 16_signed.exe
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Aug 7, 2010
Given the number of little bugs and issues being reported with 2.2, I'm actually a bit wary of installing it on my phone.
I have an Orange phone which I debraded by flashing the generic ROM. I was wondering - if I install 2.2 and then don't like it, can I revert back by re-flashing the original generic ROM again or won't the installer let me "downgrade" like this?
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Sep 7, 2010
Heres how to downgrade from stock 2.2(includes ota and update.zip)
note- when i did this my phone was not rooted
follow this post
[GUIDE] How to downgrade from OTA RUU 2.2 to 2.1 - xda-developers
go to comments page 2 and scroll for the downloads(download all)
follow instructions( i don't know where but search internet for unrevoked.zip and put in the root of the tools folder
done! and on 2.1.
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May 2, 2010
Can any version of the leak be downgraded? for example can version 3 be downgraded the same way as version 1 or 2? (do all three use the same bootloader?)
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Feb 3, 2013
I rooted my device (Galaxy Nexus GSM / Maguro) weeks ago and switched from the stock OS to Cyanogenmod 10.
Some days ago I received the (so called "stable") update to 10.1 and installed it (gapps 121212 too).
Unfortunately, the stable 10.1 turned out to be rather unstable: Apps (Google Play Music, Skype, Youtube, SMS, ...) either crashed on device startup or as soon as the app was started.
SMS frequently froze the whole phone. The former rather fast and stable device became an unstable and failure-prone device
Installing diverse nightly builds didn't improve the situation, so I decidet to roll back to 10.0.
Again, a bad decision! After installing it, CM won't boot any more. I can see the boot-image (the circle of death, as I call it by now) and that's it!
I tried to reboot in recovery mode, but I cannot switch options with the volume keys. The only option I have is to boot into the broken system...
Below the android icon it reads: Downloading.. Do not turn off target!
Nexus Root Toolkit does'nt recognize it (neither as fastboot nor as adb device).
My computer system ist Windows XP SP 3.
BTW: I don't know if this Information is relevant: The Android-Icon in recovery mode is not a lying one with its belly open but the standard 2D-Android-icon. And, perhaps more grave: Due to security concerns, ADB was disabled in my (then working) Cyanogenmod-OS...
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Mar 16, 2014
I have a Moto X on 4.4.2 that I want to downgrade back to 4.2.2. I want to do this because it was faster on my phone and I liked the blue status bar better. It is stock and on Verizon.
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