Rolling Back to Stock ROM?

[n1b2]

i install cyangen n did not back up ... when it rebooted i did not have android market place...if i falsh back to factory when i get it back ...please help

[davidusr]

I guess the question is, what exactly is the end result you're trying to achieve? If you want to go back to an un-updated (back to ERD79), out-of-the-box, bone-stock, secure boot, recovery, and system image, first download this:

http://www.romraid.com/paul/nexusone...ock-images.zip

This process I'm about to guide you through will replace your AmonRA recovery with the stock recovery, and revert the boot and system partitions to secure (meaning non-root), stock images. It also will wipe the userdata partition and cache partition...when complete, it should behave as though this was the first time you've ever turned it on. If you don't want that, don't proceed!

1. Extract the zip you downloaded and you will find a bunch of files...you'll only need:
boot.img
recovery.img
system.img
Put these in your Android SDK tools folder.
2. Start phone in fastboot (hold down trackball + hit power) and plug into USB.
3. Open a command window from your SDK tools directory and type in each of the following commands in bold and do not interrupt (system.img will take a while; it's 116megs)! Be patient and wait for each one to finish:
fastboot devices **this is to be sure the phone is recognized**
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot erase cache
fastboot erase userdata
4. Reboot phone and reenter all your google/gmail acct info.

Also, at this point, you'll probably want to get the official OTA update from Google...Dial the following number on the phone keypad to trigger a checkin:

*#*#2432546#*#* **status bar should say "checkin result: success"**

Now go to Settings>About Phone>System Updates...you should see the update downloading.

That should do it. This is as close to untouched and stock as you'll ever get since you're already unlocked and that can't be reverted.

No matter where I DL the original ROM from, XDA or MoDaCo, when I extract it, If I dont get an error saying the file is corrupt/bad DL, all I see is boot.img, no system.img or recovery.img. What am I doing wrong?

Nevermind... I was using winzip to extract. Winrar worked better.

[Moe]

I guess the question is, what exactly is the end result you're trying to achieve? If you want to go back to an un-updated (back to ERD79), out-of-the-box, bone-stock, secure boot, recovery, and system image, first download this:

http://www.romraid.com/paul/nexusone...ock-images.zip

This process I'm about to guide you through will replace your AmonRA recovery with the stock recovery, and revert the boot and system partitions to secure (meaning non-root), stock images. It also will wipe the userdata partition and cache partition...when complete, it should behave as though this was the first time you've ever turned it on. If you don't want that, don't proceed!

1. Extract the zip you downloaded and you will find a bunch of files...you'll only need:
boot.img
recovery.img
system.img
Put these in your Android SDK tools folder.
2. Start phone in fastboot (hold down trackball + hit power) and plug into USB.
3. Open a command window from your SDK tools directory and type in each of the following commands in bold and do not interrupt (system.img will take a while; it's 116megs)! Be patient and wait for each one to finish:
fastboot devices **this is to be sure the phone is recognized**
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot erase cache
fastboot erase userdata
4. Reboot phone and reenter all your google/gmail acct info.

Also, at this point, you'll probably want to get the official OTA update from Google...Dial the following number on the phone keypad to trigger a checkin:

*#*#2432546#*#* **status bar should say "checkin result: success"**

Now go to Settings>About Phone>System Updates...you should see the update downloading.

That should do it. This is as close to untouched and stock as you'll ever get since you're already unlocked and that can't be reverted.

Will this stock rom work with the AT&T phone or just the T-mobile? I am a rookie at this and have made it through unlock and rooting but I do not want to mess up the phone by putting the wrong stock rom on it!!My main problem is not putting the correct radio bands in the phone?? Sorry for the rookie questions but I have never done this kind of stuff ever and I am a little shakey!!!!:nexusx: I want to keep information and rom just incase I need to send the phone in for repair, Thank You!!!

[Zehlek]

I guess the question is, what exactly is the end result you're trying to achieve? If you want to go back to an un-updated (back to ERD79), out-of-the-box, bone-stock, secure boot, recovery, and system image, first download this:

http://www.romraid.com/paul/nexusone...ock-images.zip

This process I'm about to guide you through will replace your AmonRA recovery with the stock recovery, and revert the boot and system partitions to secure (meaning non-root), stock images. It also will wipe the userdata partition and cache partition...when complete, it should behave as though this was the first time you've ever turned it on. If you don't want that, don't proceed!

1. Extract the zip you downloaded and you will find a bunch of files...you'll only need:
boot.img
recovery.img
system.img
Put these in your Android SDK tools folder.
2. Start phone in fastboot (hold down trackball + hit power) and plug into USB.
3. Open a command window from your SDK tools directory and type in each of the following commands in bold and do not interrupt (system.img will take a while; it's 116megs)! Be patient and wait for each one to finish:
fastboot devices **this is to be sure the phone is recognized**
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot erase cache
fastboot erase userdata
4. Reboot phone and reenter all your google/gmail acct info.

Also, at this point, you'll probably want to get the official OTA update from Google...Dial the following number on the phone keypad to trigger a checkin:

*#*#2432546#*#* **status bar should say "checkin result: success"**

Now go to Settings>About Phone>System Updates...you should see the update downloading.

That should do it. This is as close to untouched and stock as you'll ever get since you're already unlocked and that can't be reverted.

Thanks, if I need to do a restore

[Zehlek]

I guess the question is, what exactly is the end result you're trying to achieve? If you want to go back to an un-updated (back to ERD79), out-of-the-box, bone-stock, secure boot, recovery, and system image, first download this:

http://www.romraid.com/paul/nexusone...ock-images.zip

This process I'm about to guide you through will replace your AmonRA recovery with the stock recovery, and revert the boot and system partitions to secure (meaning non-root), stock images. It also will wipe the userdata partition and cache partition...when complete, it should behave as though this was the first time you've ever turned it on. If you don't want that, don't proceed!

1. Extract the zip you downloaded and you will find a bunch of files...you'll only need:
boot.img
recovery.img
system.img
Put these in your Android SDK tools folder.
2. Start phone in fastboot (hold down trackball + hit power) and plug into USB.
3. Open a command window from your SDK tools directory and type in each of the following commands in bold and do not interrupt (system.img will take a while; it's 116megs)! Be patient and wait for each one to finish:
fastboot devices **this is to be sure the phone is recognized**
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot erase cache
fastboot erase userdata
4. Reboot phone and reenter all your google/gmail acct info.

Also, at this point, you'll probably want to get the official OTA update from Google...Dial the following number on the phone keypad to trigger a checkin:

*#*#2432546#*#* **status bar should say "checkin result: success"**

Now go to Settings>About Phone>System Updates...you should see the update downloading.

That should do it. This is as close to untouched and stock as you'll ever get since you're already unlocked and that can't be reverted.

Everything worked except for the last step, I get failed due to permissions. I also have a Nandroid backup but don't know how to apply

[FC1032]

Hi!

I tried following the steps posted in post 6.

However:
1) The link provided did not direct me to a link, it just took me to the home page. So I navigated around the download section myself and downloaded the FRF91 image format file from here:

21/Oct Stock ROMs - ERD79 -> FRG83 images / zip / online kitchen (optional root / insecure) - Android @ MoDaCo

I'm not entirely sure if it was right, and its rather confusing there. So i just chose that one.

2) probably due to (1), when performing "fastboot flash boot boot.img", it says:

"FAILED: <remote: signature verify fail"

and I cannot proceed

Please help me! I cannot load custom roms anymore so I need to revert everything to stock and start from scratch!