I recently rooted my phone using the kaosfroyo zip file and i wanted to return my phone back to the original 100% stock form. here are the steps i used to get to the point to where i am stuck
This must be done from a PC with Fastboot, which comes with windows. Linux/Mac users will have to find it and compile it. You will need to have Amon's recovery image installed to use this downgrade, at the end we will overwrite his image with the stock one.
Inside unzipme.zip are three files
downgrade.zip md5sum: c440c87f1e67f4b62e05da0d255e80e9
-Do not unzip/open/alter this file
--Contains your kernel, radio firmware, and system.
recovery.img md5sum: 71a4b633bdb32de9dcdd8953fef43cdc
--stock recovery image
hboot.nb0 md5sum: 38899da4e5e002e3be22900f5f4eb6f7
--Original bootloader
Step one:
Put hboot.nb0 and recovery.img in the tools dir of your sdk.
Put downgrade.zip on the sdcard of your phone
Step two:
Turn your phone off, then turn it back on holding the power button (red) and send button (green). Once in the boot loader press volume down, then volume up to get to Amon's recovery image. Go to wipe, wipe dalvik cache, and do a factory reset (aka wipe data). Then choose flash zip from sdcard, and flash downgrade.zip. The phone will flash the kernel, and system softare, then ask you to reboot. Let it reboot so it can flash the radio, it will restart back in the recovery image. You can power down your phone now.
At this point if your just wanted 1.5 back, you are done.
If you want the original bootloader and recovery image, (ie 100% stock) continue on.
Step three:
Plug your phone into your PC. Power your phone on using the power button (red) and send button (green). Your phone should now be sitting back at the bootloader screen and say FASTBOOT USB. Now on your PC, go to the sdk tools dir in command line. Issue this command
Code:
fastboot flash recovery recovery.img
Let it flash, when done wait a minute (just to make sure).
Then issue this command
Code:
fastboot flash hboot hboot.nb0
Once this is done, wait a minute then pull your battery and restart your phone.
You are now back at factory stock.
The part that I am stuck at is when it says to issue the command "fastboot flash recovery recovery.img" and the next command for "hboot.nb0"
I do this and it starts then says the following
sending ' recovery' (2004 kb)...
FAILED (remote: not allow)
finished. total time: 0.002s
I get this error for both the recovery.img command and the hboot.nb0 command. can someone please help me so i can return to stock phone and get my android 2.2 stock back. PLEASE
Along with this the 1.5 tries to update it reboots after update is downloaded and fails saying
E: No signature (689 files)
E: Verification Failed
Installation aborted