Upgrading Nexus7 from "4.0" Jellybean" to 4.1?

[elmo]

I got a Nexus7 as a gift the other day from someone who works at Google. I wonder are these the same ones they hand out as gifts at the shows?
When tapping on Settings>About Tablet> Android version>JellyBean, the next sceen shows the ICS icon with "Android 4.0: Ice Cream Sandwich" underneath.

I was using youtube app, and most of the videos won't load or play. A couple other people I know who got the same tablets say their youtube app doesn't work either. Youtube videos won't play in browsers either.

Unlocked and rooted the tablet.

I tried updating, deleting, and reinstalling older youtube versions. Nothing works or is able to install.

So I tried to see if I could upgrade to 4.1 from the various procedures described on XDA as well as here.

When I'm in command and type "fastboot flash bootloader bootloader-grouper-3.34.img" I get the error "signature mismatch could not flash bootloader"

When I type in "fastboot -w update image-nakasi-jro03d.zip" it tells me I need 3.34 bootloader. The version on the tablet is 3.24.

So I guess I need to figure out how to flash to the newer bootloader first.

Anyone have any ideas?

 

[elmo]

Got this to work. Within the image folder zip, open "android-info.txt", change bootloader version to the one loaded on the Nexus, and save.

 

[winthorpe]

First of all, thanks a lot for posting the solution, I had the same issue and this worked for flashing the stock 4.1. Was stuck on this for a few weeks and just noticed your post.

I see my device's bootloader is still at 3.24, I wonder if this won't cause a problem for future firmware updates and OTAs. Did you ever manage to solve the signature mismatch issue and update to 3.34?

Thanks!

 

[elmo]

No, I'm not that smart But I think any OTA updates can be DL from google anyway.

Update: Couldn't get the update to install using the ADB sideload method. http://forums.androidcentral.com/go...-rolling-out-nexus-7-adds-landscape-mode.html

You can wait for the OTA and see if that works. I just installed CWM recovery and installed JZO54K that way.