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How to revert back to 4.1.1 yakjuux?

OP mrrhtuner

19th February 2013, 09:16 PM   |  #1  
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Hey everybody, my friend and I both flashed our phones from ICM 4.1.1 to JB 4.2.2. We both got the phones from Fido on a nice PP and my friend wants to revert back to ICM 4.1.1 yakjuux prior to the flash.

We followed the guide on here last weekend, unlocked boot loader, flashed 4.2.2 completely over 4.1.1. I am enjoying 4.2.2 but my friend is having issues with call quality, issues he didn't have before.

I don't think there is a way to revert back easily, but I wanted to clarify with the forum. I tried to search but haven't found a thread on going back to ICM 4.x.x Yakjuux


Thank you kindly!
19th February 2013, 11:34 PM   |  #2  
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You can't, there are no official images.

If you have issues with call quality, revert the radio image to the one from 4.1.1, other differences are insignificant. Google Nexus image website, download the yakju image and flash the radio with fastboot (fastboot flash radio radioLF.img).
20th February 2013, 12:34 AM   |  #3  
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Quote:
Originally Posted by madd0g

You can't, there are no official images.

If you have issues with call quality, revert the radio image to the one from 4.1.1, other differences are insignificant. Google Nexus image website, download the yakju image and flash the radio with fastboot (fastboot flash radio radioLF.img).

That was my other question, if I can use the radio file from 4.1.1

Great, I will get him to bring the phone over and we'll try it.

Thanks
20th February 2013, 12:47 AM   |  #4  
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Re: How to revert back to 4.1.1 yakjuux?
Theres 4.1.2 only posted now, can't remember if the radio was changed from 4.1.1, but if it was you might want to search the stickies here on xda for a possible 4.1.1 radio download link.

Sent from my Galaxy Nexus using Tapatalk 2
20th February 2013, 12:47 AM   |  #5  
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You CAN revert back to yakjuux. There are at least 3 different threads (2 in General and 1 in Development) that have nandroid backups of yakjuux ROMs. Search and you shall find.

P.S. Thread moved to Q&A -- all questions go in Q&A, not General.
20th February 2013, 01:14 AM   |  #6  
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Quote:
Originally Posted by efrant

You CAN revert back to yakjuux. There are at least 3 different threads (2 in General and 1 in Development) that have nandroid backups of yakjuux ROMs. Search and you shall find.

P.S. Thread moved to Q&A -- all questions go in Q&A, not General.


Thank you efrant, I will do my searching now
20th February 2013, 09:26 AM   |  #7  
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Re: How to revert back to 4.1.1 yakjuux?
I'd still suggest you try the radio first and keep up to date with the newer Android version. That's why you bought a nexus nevertheless.

Sent from my Galaxy Nexus using Tapatalk 2
20th February 2013, 09:31 PM   |  #8  
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Can someone please help me, I need any yakjuux nandroid backup. I am currently on a Yakju 4.2.1 but my charging port broke and I want to send it in for warranty but they might not help me because it isn't yakjuux Please help
Thanks
21st February 2013, 01:02 AM   |  #9  
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Quote:
Originally Posted by yasir.97

Can someone please help me, I need any yakjuux nandroid backup. I am currently on a Yakju 4.2.1 but my charging port broke and I want to send it in for warranty but they might not help me because it isn't yakjuux Please help
Thanks

http://forum.xda-developers.com/show...94&postcount=5
24th February 2013, 07:14 AM   |  #10  
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Hello everybody, so after using JB 4.2.2 I have noticed the antenna in certain locations isn't as good as it was and the battery does wear down much quicker.

Regardless, I decided to revert back to Galaxy Nexus Yakju 4.1.2 but ONLY the radio file.

So following efrants guide, I did the following.
-Downloaded from Google developers 4.1.2, unzipped all the contents into one folder.
-I downloaded platform-tools-v16.zip and extracted all the contents of that zip into the folder above that contains the unzipped image files.
-As I locked my boot loader before when I went to 4.2.2, I had to unlock the boot loader.
-then I did the Part D step 7, flash the radio.
-fastboot flash radio radio-maguro-i9250xxlf1.img
-one that was done, I did fastboot reboot to reboot the phone
-Phone loaded up one again.

One observation, its odd but it seems that my phone has been wiped clean, but my wallpaper that I set before doing this is still there. All my text and everything is gone but the wallpaper is there, so I'm not sure what that means exactly.

From those of you that have done this, does it seem like I completed the radio flash-downgrade properly?

I'd like to verify to be certain

Thank you!

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