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[XT925] Downgrade to ICS stock rom ! Root any JB rom !

OP thund3rbay

thund3rbay
6th January 2013, 09:16 AM   |  #1  
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[UNLOCKED BOOTLOADER ONLY ]
Okay i have found the solution ! but i take no responsability if you brick your phone !
My device is an XT925 ! from Rogers Canada !
I never lost IMEI during this downgrade ! Your bootlader must be unlocked !
1 : Charge your phone !
2 : Download the DROID RAZR HD Utility 1.10 - http://forum.xda-developers.com/show....php?t=1970267
3 : Go to fastboot...
4 : Downgrade ( yes is for XT926 but it work for XT925 )
5 : Go to fastboot don't let android start ( push 10 seconds power on - vol- - vol+ if the verizon logo start ...the phone shutdown go back to fastboot )
( i don't try to start the phone with the xt926 rom... )
6 : Download and flash via rsd the rom you want ( work great with O2 and LATAM retail )
( off topic : latam retail have only 3 language ... English spanish port...)
7: Downgrade security error ? or get var error ? Edit the XML Inside the rom : delete the 2 get var line :
<step operation="getvar" var="max-download-size" />
<step operation="oem" var="fb_mode_set" />
and delete :
<step operation="flash" partition="partition" filename="partition_signed" MD5="0c0917493a29c487f87434a0997c3048" />
8 : Enjoy your ics stock rom...
9 : Upgrade to Jelly Bean if available and if you want

ROOT ALL JB ROM ( and ICS rom )
No need to use OTA rootkeeper when bootloader is unlocked !
Flash CWM
http://forum.xda-developers.com/show....php?t=1973904

and Flash SuperSU Via CWM
http://download.chainfire.eu/298/Sup...erSU-v0.99.zip

Need LTE on JB rom ?
Flash via fastboot your modem and fsg...

fastboot erase modemst1
fastboot erase modemst2
Fastboot flash modem modem_signed
Fastboot flash fsb fsb_signed

I really love the o2 ROM... no bloatware...Fast... many language ( french ... arabic... etc )
Last edited by thund3rbay; 8th January 2013 at 04:24 AM. Reason: Add some line for lte flash
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6th January 2013, 07:55 PM   |  #2  
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OP you're a genius thank you so much for figuring this out!

Hey do you know if the Rogers software will work for Fido? Well I got all of the Fido custom software?
Last edited by SickBeast; 6th January 2013 at 08:10 PM.
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thund3rbay
6th January 2013, 08:30 PM   |  #3  
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Quote:
Originally Posted by SickBeast

OP you're a genius thank you so much for figuring this out!

Hey do you know if the Rogers software will work for Fido? Well I got all of the Fido custom software?

Rogers and Fido have the same firmware ! ( XT925.RCI... )
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6th January 2013, 09:01 PM   |  #4  
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Quote:
Originally Posted by o2qc418

Rogers and Fido have the same firmware ! ( XT925.RCI... )

Thanks for that. I'm going back to the stock software because I cannot do tethering on LTE with the jelly bean ROM.
6th January 2013, 09:16 PM   |  #5  
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Well done!! Will try that today, kudos to you!!
6th January 2013, 10:11 PM   |  #6  
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Do not delete this line

Quote:

<step operation="oem" var="fb_mode_set" />

thund3rbay
6th January 2013, 10:20 PM   |  #7  
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Why ... if you do not delete ... there are an error when you flash...
This method is listed in many others topics ...
The only line anothers line i have deleted is
<step operation="flash" partition="partition" filename="partition_signed" MD5="0c0917493a29c487f87434a0997c3048" />
if i don't delete i have the downgrade security error
I really have no error with my XT925 ! from Rogers Canada !
Flashed 4 friend with the O2 rom
Last edited by thund3rbay; 6th January 2013 at 11:52 PM.
7th January 2013, 09:22 AM   |  #8  
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Quote:
Originally Posted by matias-c-18

Do not delete this line

Why not? I deleted that line and the last line (see below) that was similar. No issues whatsoever, in fact the whole thing worked a treat!

The other line I also deleted was:

<step var="fb_mode_clear" operation="oem"/>

I figured if you're not setting it at the beginning, then there is no need to clear it at the end.
Last edited by salada2k; 7th January 2013 at 09:26 AM.
thund3rbay
8th January 2013, 04:23 AM   |  #9  
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If you have problem with your LTE
Make this before flashing the modem and fsg via fastboot
fastboot erase modemst1
fastboot erase modemst2
8th January 2013, 09:14 PM   |  #10  
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Worked perfectly for me now in original Telcel firmware.

Followed steps to the letter.

thank you!!

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