Rolling back the OTA update? How?

[mobiousdigital]

hi all,

is there a way to return to factory default pre-OTA manual update? not rooted here and no intention of doing so just wondering if I can completely flatten and re-start the phone to how it was previously?

thanks.

 

[craigacgomez]

Yes, you can reflash the stock original shipping ROM and radio firmware, and then apply the update if you wish...

1. Download the original shipping ROM from here.
2. Disable backup my settings under privacy settings.
3. Do a factory data wipe within Android. Settings => Privacy Settings => Factory Data Reset
4. Unzip the original shipping ROM.
5. Plug in Nexus One with USB to computer (enable usb debug mode)
6. Boot in bootloader mode -> adb reboot bootloader
7. Confirm fastboot connection -> fastboot devices
8. Flash user data partition -> fastboot flash userdata /path/to/userdata.img
9. Flash boot partition -> fastboot flash boot /path/to/boot.img
10.Flash system partition -> fastboot flash system /path/to/system.img
11.Flash radio partition -> fastboot flash radio /path/to/Radio*.img (I cannot remember the name of the radio img file)
12. Flash recovery partition -> fastboot flash recovery /ath/to/recovery.img
13. Reboot -> fastboot reboot

You may choose to skip the recovery and radio flash. After this, you will have the stock original shipping ROM and radio firmware.

Credits: XDADevelopers for steps and original shipping ROM.

 

[mobiousdigital]

Can anyone confirm this is correct? a lot of money to brick a phone if I do it wrongly! thanks.

 

[rori]

..but, why do you want to downgrade? - the multitouch upgrade is very nice

 

[mudrock1000]

..but, why do you want to downgrade? - the multitouch upgrade is very nice

+1 If you have some problems tell us. I'm sure we could help. (I'm still waiting for the OTA update because i wanna expierience it...idk how to spell that anymore. God i suck)

 

[craigacgomez]

Can anyone confirm this is correct? a lot of money to brick a phone if I do it wrongly! thanks.

From personal experience, if you follow the steps properly, this will work. I have done it successfully...