Updated!!!

(Guide) How to flash from yakjuxw ICS directly to yakju Jelly Bean V2.1

With the release of Galaxy Nexus Android Jelly Bean Factory Images, you are now no longer need to flash to yakju ICS from yakjuxw and then OTA to get Jelly Bean...You can now directly flash to yakju Jelly Bean from any yakjuxw ICS

Note:
1. About the build number Build IMM76K (Android ICS 4.0.4 yakjuxw). Please bare in mind that our Gnex is GSM set - Maguro, even they have the same build number with CDMA one, please ignore it!!
2. No matter which yakjuxw version you are using (4.0.1 - 4.0.4), this guide should work.

Method 1 (Using Gnex Toolkit): - Highly recommended
1) Download v7.7 Gnex toolkit or the latest one Here (V7.7 is the latest at the time of writing)
2) Install it
3) Go Here and download Factory Images "yakju" for Galaxy Nexus "maguro" (GSM/HSPA+) version 4.1.1 or just save this file (DO NOT EXTRACT IT!!)
4) Navigate to ''C:\Galaxy Nexus toolkit\ put_google_factory_image_here\'' in your HDD and place the downloaded file.
5) Now open the Gnex toolkit, select Android 4.0.4 (Build IMM76I) from GSM Model (Yakju-Maguro)
6) Then, select "Install/uninstall galaxy nexus drivers on your PC" then your operating system then "Install drivers to your PC" (without plugging in the phone 1st) and follow on screen instruction. <--- Very important to make sure driver is installed properly or it wont work
6.1) If u can't get the driver install using Gnex toolkit, please check note 2 below.
7) Reboot computer.
8) Open toolkit again, turn off phone. But this time, turn on phone again but hold down all buttons at the same time. (the vol + and vol - and power button)
9) Now, plug ur phone into computer. In toolkit, now select Android 4.0.4 (Build IMM76I) from GSM Model (Yakju-Maguro) agn.
10) Select "Unlock or Re-Lock your bootloader" then "Unlock bootloader" and follow on screen instruction.
11) (Optional, If your phone is still in fastboot mode.) After done that, turn off phone once agn. But this time, turn on phone again but hold down all buttons at the same time. (the vol + and vol - and power button)
12) Select "toolkit settings" (should be around the bottom), go to "model/ Build selection page".
13) This time please select Android 4.1.1 (Build JRO03C) from GSM Model (Yakju-Maguro).
14) Select "Download, extract and flash google factory stock rom" then "Flash Google factory image" and then follow on screen instructions
15) If everything works well.....Your phone boot up and it might take a while for the 1st boot. And you will be on yakju 4.1.1 Jelly Bean.

Method 2 (Using manually adb mode): - Only for advanced user

Note 1:
Im not responsible for anything happen to ur phone. Use it at ur own risk.

Note 2:
Manually install using universal naked driver 0.7
Guide: Here
Driver File: Here

Note 3:
If u still need the old guides, check the following links:

[Guide] How to flash from yakjuxw ICS to Stock Yakju ICS 4.0.4
[Guide] How to update ur Gnex stock Yakju ICS to Jelly Bean


Credit to @springfall for the original guide

This post has been edited by vernon91: Aug 7 2012, 09:46 PM

Just a suggestion,

step 11, if phone is still ON and still at Fastboot mode, turning off is unnecessary.

thx and done

Bla bla bla

FYI, if you're using Galaxy Nexus Toolkit 7.7,
In the device selection page, Option 5, it's now listed as 5. Android 4.0.4 <Build IMM76K, IMM76I>
So please never ask again. I mean, anyone else please never ask again

Btw, when you're in the Menu, and you wanted to go back to device selection page menu
You can choose
26. ToolKit Settings --> 1. Go to Model/Build Selection page




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Colour tuned to 160 160 168. Quite nice to my eyes. Trinity colour too over

VOLUME IS EXTREMELY LOUD!!!!

This post has been edited by IwanAGP: Aug 4 2012, 06:47 PM

oh i see, haven touch my Gnex toolkit for so long and still on v7.5

No response at all already try other battery also cannot hmm rosak already?

This post has been edited by Iron-eagle: Aug 4 2012, 06:50 PM

mine tell us wats ur problem agn?

Cannot boot up after flashing to... Cm10? IINM

Try Fastboot mode?

okays, can u go into fastboot mode?

cannot enter fasboot mode,when try to chrge no response at all

then when u turn on ur phone stuck at google logo?

no..its black..no response

wow, a dead phone?

wat did u do?

i flash cm10 then ok,then i turn off n wanna enter fasboot mode to flash gapps dead already

Sounds like a really dead phone

well, just asking b4 u flash how many battery is thr left?

looks like nth much i can help, wait for other sifu to help u

last resort, send for warranty

maybe ur battery habis . have u tried charging it when it turn off?

30@40% or lower
yup chrge already but no response

@Iron-eagle

well here are some suggestion u can try:
1) charge the phone for 1 to 2 hr then try turn it on.
2) after charged, take out battery and left the phone(without battery) for a few hours and try agn
3) if u have friend hu using Gnex, try their battery and vice versa

---

Added on August 4, 2012, 7:12 pm30@40% battery to flash a rom is risky

This post has been edited by vernon91: Aug 4 2012, 07:12 PM

how can that be possible when u flash cm10 and reboot suddenly phone dead. hmm