[Q] Possible Roll back glitch 4.1.2

Thecat1080

New member
Apr 4, 2013
4
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So I am running a xt 926 and like many here I lost root on the update to 4.1.2, mine was because I did it through the usb. Not the point of this post, what I am here to state is I found an error in the fast boot app that might offer a rollback solution, but I lack the ability to figure out a full exploit. What I found was when I went to flash 4.1.1 if I removed getvar and tried the flash it failed instantly. How ever if I changed the version label a the top of the xml file to the current version name the flash would start only to fail again after the first reboot, it actually fails on a file. I replaced the file with one from the new ota and it was of again flashing to part 11 of 27. This is were my talents have run dry, as an engineer I only needed one semester of programming logic. So what I pose to the group is, is it possible the flash is looking for nothing more than text in each file to verify that it is the newest version. If so can we alter that text and flash the older jb ota namely 4.1.1, if so would this carry a boot loader with it? Or would the 1.10 utility(the one with batman symbol) allow reversing to ics.

If I am way off here I apologize for the noob other day inquiry. I also apologize for lack of proper terminology, aka noob lingo.
 
Last edited:

mattlgroff

Inactive Recognized Developer
Dec 5, 2011
2,291
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San Diego
So I am running a xt 926 and like many here I lost root on the update to 4.1.2, mine was because I did it through the usb. Not the point of this post, what I am here to state is I found an error in the fast boot app that might offer a rollback solution, but I lack the ability to figure out a full exploit. What I found was when I went to flash 4.1.1 if I removed getvar and tried the flash it failed instantly. How ever if I changed the version label a the top of the xml file to the current version name the flash would start only to fail again after the first reboot, it actually fails on a file. I replaced the file with one from the new ota and it was of again flashing to part 11 of 27. This is were my talents have run dry, as an engineer I only needed one semester of programming logic. So what I pose to the group is, is it possible the flash is looking for nothing more than text in each file to verify that it is the newest version. If so can we alter that text and flash the older jb ota namely 4.1.1, if so would this carry a boot loader with it? Or would the 1.10 utility(the one with batman symbol) allow reversing to ics.

If I am way off here I apologize for the noob other day inquiry. I also apologize for lack of proper terminology, aka noob lingo.
qFuse still won't let you downgrade to the old files. The Secure Version cannot be "glitched."