Trying to reset my custom ROM'd Nexus 6 back to factory status to sell it

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CayenneGTS

Senior Member
Nov 5, 2012
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Some help please with the instructions here https://xdaforums.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008 .

I have a Nexus 6 with the PureNexus ROM and I need to reset the phone back to factory status as I now have a Pixel XL.

I've followed the instructions correctly (as far as I'm aware anyway). I'm getting the following error with the Flash all script (bolded text)

archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
failed to allocate 1513810096 bytes
error: update package missing system.img

Where do I find these .sig and .img files?

target reported max download size of 536870912 bytes
sending 'bootloader' (4071 KB)...
OKAY [ 0.130s]
writing 'bootloader'...
(bootloader) flashing partition ...
(bootloader) This may take a few seconds if a
(bootloader) different partition table is being
(bootloader) flashed since we need to backup
(bootloader) and restore a few partitions
(bootloader) Flashing primary GPT image...
(bootloader) Flashing backup GPT image...
(bootloader) flashing aboot ...
(bootloader) flashing sbl1 ...
(bootloader) flashing rpm ...
(bootloader) flashing tz ...
(bootloader) flashing sdi ...
(bootloader) flashing logo ...
OKAY [ 0.881s]
finished. total time: 1.012s
rebooting into bootloader...
OKAY [ 0.002s]
finished. total time: 0.003s
< waiting for device >
target reported max download size of 536870912 bytes
sending 'radio' (115507 KB)...
OKAY [ 3.733s]
writing 'radio'...
(bootloader) flashing modem ...
(bootloader) flashing mdm1m9kefs1 ...
(bootloader) flashing mdm1m9kefs2 ...
(bootloader) flashing mdm1m9kefs3 ...
(bootloader) flashing versions ...
OKAY [ 1.943s]
finished. total time: 5.678s
rebooting into bootloader...
OKAY [ 0.001s]
finished. total time: 0.003s
< waiting for device >
target reported max download size of 536870912 bytes
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
failed to allocate 1513810096 bytes
error: update package missing system.img
Click to expand...
Click to collapse
 
C

CayenneGTS

Senior Member
Nov 5, 2012
463
167
Oakville
Strephon Alkhalikoi said:
@CayenneGTS: Using WinRAR or 7-Zip, extract the contents of the factory package to a folder. Then find the largest file, and open that with WinRAR or 7-Zip. The system.img will be inside. In simple language, Google compresses the files twice.
Click to expand...
Click to collapse
Thanks, I found the "missing" files in the zip as you described.

Next stupid question, from a command prompt in that folder, I typed in "fastboot flash boot.img" - this is the same line in the flash all script, but that just generates an error.

Whats the correct syntax to flash boot.sig , recovery.sig and system.img?
 
Strephon Alkhalikoi

Strephon Alkhalikoi

Senior Member
Aug 3, 2010
7,479
3,462
Vulcan
Samsung Galaxy S4
Nexus 6
If I recall correctly, "fastboot flash [partition] [image.img]", e.g. " fastboot flash boot boot.img". If that doesn't work, reverse the partition and disk image names.

Whatever you do, do not flash userdata.img. Simply make sure you do a factory reset after flashing, as the userdata.img is for a 32GB N6. Flashing it on a 64GB N6 results in half the internal storage being unseen by the device until a factory reset is done.
 
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HipKat

HipKat

Recognized Contributor
Feb 5, 2011
7,099
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Pekin, IL via Buffalo, NY
hipkatblog.wordpress.com
HTC Supersonic
Nexus 6
Good grief, use Wugs NRT, flash Stock and Unroot option, done!

---------- Post added at 10:33 PM ---------- Previous post was at 10:31 PM ----------
Strephon Alkhalikoi said:
@quicksilver53: I don't recommend a toolkit, as the OP won't get any feedback if there is a problem.
@CayenneGTS: Using WinRAR or 7-Zip, extract the contents of the factory package to a folder. Then find the largest file, and open that with WinRAR or 7-Zip. The system.img will be inside. In simple language, Google compresses the files twice.
Click to expand...
Click to collapse

WHy are you telling him the hard way to do it when he just wants to go back to stock and sell t he phone? It's not like he's going to do anything else with it
 
Strephon Alkhalikoi

Strephon Alkhalikoi

Senior Member
Aug 3, 2010
7,479
3,462
Vulcan
Samsung Galaxy S4
Nexus 6
HipKat said:
Why are you telling him the hard way to do it when he just wants to go back to stock and sell t he phone? It's not like he's going to do anything else with it
Click to expand...
Click to collapse
I explained why in previous posts, but if you want another reason, it's because everyone should know how to use fastboot before using a toolkit, and the toolkits don't provide that knowledge. The OP's next device may not have a toolkit available, while fastboot is universal. Plus the "hard" way is so damn easy the "easy" way just encourages laziness.
 
C

CayenneGTS

Senior Member
Nov 5, 2012
463
167
Oakville
Strephon Alkhalikoi said:
If I recall correctly, "fastboot flash [partition] [image.img]", e.g. " fastboot flash boot boot.img". If that doesn't work, reverse the partition and disk image names.

Whatever you do, do not flash userdata.img. Simply make sure you do a factory reset after flashing, as the userdata.img is for a 32GB N6. Flashing it on a 64GB N6 results in half the internal storage being unseen by the device until a factory reset is done.
Click to expand...
Click to collapse
That fixed it! Thanks Strephon!
 
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  • 2
    quicksilver53
    quicksilver53
    You could also download the Nexus Root Toolkit by Wugfresh. Install and the return to stock. I use it.

    Sent from my Nexus 6 using XDA-Developers mobile app
    View
    2
    Strephon Alkhalikoi
    Strephon Alkhalikoi
    @quicksilver53: I don't recommend a toolkit, as the OP won't get any feedback if there is a problem.
    @CayenneGTS: Using WinRAR or 7-Zip, extract the contents of the factory package to a folder. Then find the largest file, and open that with WinRAR or 7-Zip. The system.img will be inside. In simple language, Google compresses the files twice.
    View
    2
    shayneflashindaily
    shayneflashindaily
    Tool kit works fine... Use it
    View
    1
    Strephon Alkhalikoi
    Strephon Alkhalikoi
    Flash the images individually. Rename them if necessary. The batch file Google includes sometimes is rather wonky, and flashing each image individually via fastboot helps.
    View
    1
    Strephon Alkhalikoi
    Strephon Alkhalikoi
    If I recall correctly, "fastboot flash [partition] [image.img]", e.g. " fastboot flash boot boot.img". If that doesn't work, reverse the partition and disk image names.

    Whatever you do, do not flash userdata.img. Simply make sure you do a factory reset after flashing, as the userdata.img is for a 32GB N6. Flashing it on a 64GB N6 results in half the internal storage being unseen by the device until a factory reset is done.
    View

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