Nexus one back to original Google img

[Guest tchall]

Hi I have rooted my phone Nexus one and changed the boot loader and system images

as directed above for rooted phones.

I now have decided that I cant keep doing this every time Google has an update

How do I put it back to the way it was so that it is an unmodified Google Nexus one.

and so that it will receive the normal Google updates from within the phone

and so that it will take the original Google update.zip file without having to used the modified one?

Many thanks

Tom

Edited February 7, 2010 by tchall

[Guest sthoeft]

Just install a stock ROM and you are unrooted and will get all OTA updates. Your Guaranty is still void because you unlocked the bootloader!

[Guest Michael Spencer Jr.]

I think what he's asking is: what's the procedure for that? Do you wipe first? What is wiping, and can you accidentally delete too much?

[Guest tchall]

Just install a stock ROM and you are unrooted and will get all OTA updates. Your Guaranty is still void because you unlocked the bootloader!

thanks would like to do that

yea was hoping someone could give me some instructions

I have read this but the link does not work ie below link does not work

1. Download stock recovery image (for example 22607-ERD79-update-nexusone-stock-images.zip from modaco)

2. Make "fastboot update 22607-ERD79-update-nexusone-stock-images.zip" in fasboot mode (you WON"T lose your information, just get rid of root)

will it then allow me to update it with the android system recovery using the

stock standard google update zip on the SD card

without saying

..

E:No signature (208 files)

E: Verification failed

Edited June 7, 2011 by Paul

[Guest PhonePersona]

Are you saying that the Bootloader cannot be 'relocked' once unlocked?

I must investigate ;)

[Guest fudaming]

It is confirm if you do "OEM unlock", you can not lock it back.

[Guest craigacgomez]

The reason you got a signature verification failure is because you are using Amon_RA's custom recovery image. This validates only the test signatures not the official Google signatures. Technically, flashing the official ERD79 recovery image will allow you to install the ERE27 update.zip. So following the above steps, which restores you phone OS to the ERD79 stock OS, will allow yo to install the ERE27 update, since restoring to the stock will also restore the stock recovery image.

But you could use the Modaco update zip from this post (http://android.modaco.com/content/google-nexus-one-nexusone-modaco-com/301729/03-feb-ere27-new-update-rooted-and-unrooted-optional-radio-optional-himem/) to update to ERE27 using Amon_RA's custom recovery!

And, FYI, the above link is working!!

[Guest Michael Spencer Jr.]

I think you have that backwards. Amon_RA's custom recovery

doesn't

DOES verify signatures (sorry Paul) like Google's factory recovery system does. (Per Paul, it turns out Amon_RA's system verifies a test signature, and will fail to verify a Google-release signature. Pity it doesn't try to verify both, first one then the other.)

If you think about it: if Google's recovery system allowed you to flash any update.zip you wanted, you wouldn't need to unlock your bootloader. You could put whatever update.zip you wanted on your SD card and flash it without unlocking or voiding any warranties.

Amon_RA's custom recovery might check for corruption (confirming a hash) but doesn't bother confirming the update zip file was signed by any authorized publishers (using public key crypto). It'll let you install any update zip you want.

Edited February 10, 2010 by Michael Spencer Jr.

[Guest Paul]

Well, that's almost right Michael, it does check a signature, but test-keys rather than release-keys.

P

[Guest tchall]

Well, that's almost right Michael, it does check a signature, but test-keys rather than release-keys.

P

ok so after a bit of a fuss I got it to Download thanks for that

so then I unzipped it

and ran

fastboot flash boot boot.img

fastboot flash recovery recovery.img

fastboot flash system system.img

fastboot erase cache

fastboot erase userdata

but there were some other images

ie

hboot_8x50_0.33.0012_091210.nb0

microp_Passion_Passion#C_LED_V0B15_88V_20091203.img

Radio_1202_2_20091214_Signed_PASSION.img

spcustom.img

splash1.img

userdata.img

what do i do with these and if I have to flash them to get back to Google default

what command do i type in ?

Thanks in advance

Tom

[Guest vipermo]

tchall did u get it sorted ?

as i also would like to do this

Edited February 9, 2010 by vipermo

[Guest Dayzee]

ok so after a bit of a fuss I got it to Download thanks for that

so then I unzipped it

and ran

fastboot flash boot boot.img

fastboot flash recovery recovery.img

fastboot flash system system.img

fastboot erase cache

fastboot erase userdata

but there were some other images

ie

hboot_8x50_0.33.0012_091210.nb0

microp_Passion_Passion#C_LED_V0B15_88V_20091203.img

Radio_1202_2_20091214_Signed_PASSION.img

spcustom.img

splash1.img

userdata.img

what do i do with these and if I have to flash them to get back to Google default

what command do i type in ?

Thanks in advance

Tom

I don't think you need the other stuff. I think (open to correction) they are bits of the files you have already installed that have been seperated out to be used on their own eg, the splash1.img is contained in the boot.img I think. Pretty sure those files you flashed are the ones I used to get my nexus as close to stock as possible before sending it in for warranty.

The radio image is stock, but has been updated within the latest update, so no point flashing that as it will downgrade your radio.

Dayz xx

[Guest Michael Spencer Jr.]

This is related so I figure I should ask it here:

I've been installing and replacing various custom system images, installing and uninstalling lots of apps, and so forth. I fear my system has old leftover bits it doesn't really need. I want to closely inspect a clean system, unsullied by ANY extra marketplace applications, but with Google account sync intact. What's the best way to accomplish that?

My best guess is:

* I have no paid applications yet, so I will go into Marketplace and uninstall everything without exception.

* use the system settings -> privacy -> Factory data reset, and reset the phone.

* exit the setup wizard and power completely down, and reboot into Amon_RA's recovery

* apply a kitchen update zip from this site. probably latest MCR.

* Start up and complete initial setup like with a new phone

Right? Or is there a more pure way, perhaps involving "fastboot erase" commands? Unlike the above posters I want to keep Amon_RA's recovery and end up with a rooted phone with wired and wireless tethering.

Thanks again for your help.