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I have a Nexus S, rooted, with CWM and a stock 4.0.4 ROM. The USB port is broken(only charging works), so how do I go to stock 4.1.2 update?

If there is a way to manually apply OTA, that'd be great. Or a way to fix the USB port, but I think that's widely reported and not really fixed.

I tried the system > updates (and clearing Google services framework trick) and it shows upto date, ie. no new OTA. Perhaps because I have a custom recovery?

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2 Answers 2

If you can find someone else with an unlocked Nexus S, you can use nandroid backups to do everything on their device and then duplicate efforts to your device, like so:

Let's call your phone Device A and theirs Device B.
Boot into recovery on both devices, then make a nandroid backup of each device, which I will call Nandroid A and Nandroid B, for each phone.
Using some sort of wireless file-transfer application (AirDroid, Samba Server, etc), transfer the nandroid backups to a computer for safekeeping, and then put Nandroid A onto Device B and boot into recovery on Device B. Wipe the cache, dalvik cache, system partition, and data partition, then restore Nandroid A onto Device B. Once the restore is complete, boot Device B normally and perform the OTA update as you would under normal conditions.
Reboot into Recovery on Device B after installing the update, and make a new nandroid backup which I will call Nandroid A2. Then, move files around wirelessly as outlined above and wipe Device A and restore Nandroid A2 to Device A. Finally, wipe Device B and restore Nandroid B to Device B and give it back to your much-indebted-to friend.

Be careful when you wipe before a restore /not/ to wipe the internal storage on the device. The Nexus S doesn't have an SD card slot, otherwise I'd just advise you remove the SD card altogether while restoring... But TWRP has a pretty straightforward checkbox that will help you make sure you aren't wiping your internal storage.

Yes, this method is roundabout and long-winded, and yes, it does require access to hardware that you may not be able to get your hands on. But it will work.

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You could also give OTA Updater a shot, though I'm not entirely sure if it'll play nice with your setup. Can't really hurt it, though. –  Suchipi Feb 25 '13 at 1:46

Use an app like WiFi File Trasnfer to transfer the stock image to your phone and then flash it using whatever recovery you're using.

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I have Airdroid for transfer but since 4.1, Ota packages cannot be flashed via custom recovery. It gives a 'status 7' error. –  Sumesh Jan 11 '13 at 9:08
    
@Sumesh 'status 7' error is one of insufficient space, incorrect fingerprint, file corrupted.... –  t0mm13b Jan 11 '13 at 13:46
    
Status 7 is known to occur when trying to flash Ota in custom recovery, since 4.2, even when space and corruption issues do not occur. I've been unable to find a workaround. I have a backup of stock ROM via CWM, reverted to it but Ota isn't showing up even then. –  Sumesh Jan 11 '13 at 19:09
    
Unlocked bootloader == no OTA in most cases. I think I even remember my Nexus 4 giving that warning when I was rooting it. –  Santosh Jan 12 '13 at 4:27

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