[Completed] the bootloader prevent me to install cyanogenmod (sch-i535) - XDA Assist

hi guys
i have samsung galaxy s3 sch-i535 (verison) running on 4.4.2 android, i want to install a costum rom (cyanogenmod 12.1)
but as you know i first have to install a costum recovery.
the problem is i can't install a recovery by odin (i tried rom manager but when i go in recovery mod i find this: system software not authorized by verison wireless has been found on your phone)
i think that rhe reason of the problem is: the bootloader is locked.
so please help me guys.

Hi
Thanks for using XDA Assist.
Please check these threads:
http://forum.xda-developers.com/showthread.php?t=2797314
http://forum.xda-developers.com/showthread.php?t=2295146
Good luck.

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Thanks for writing to us at XDA Assist. I think the Galaxy Plus II q&a section would be the best place for your question:
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I originally had KitKat 4.4.2 rooted using towelroot, but I got tired of the ugly TouchWiz UI and wanted to try Lollipop. I successfully used the FlashFire method and flashed a pre-rooted Lollipop OF3 Stock ROM (DeOdexed) and I am using the OA1 Bootloader (I believe it's KitKat) which I flashed with Odin.
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I can't find a straightforward answer as to what kernals I should be using to do this for my specific phone and if it is even possible. I will list my phone's details below.
Thank you!
-AT&T Samsung Galaxy S5 G900A
-Lollipop 5.0 (Pre-rooted OF3 Stock ROM)
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XDA Visitor said:
I originally had KitKat 4.4.2 rooted using towelroot, but I got tired of the ugly TouchWiz UI and wanted to try Lollipop. I successfully used the FlashFire method and flashed a pre-rooted Lollipop OF3 Stock ROM (DeOdexed) and I am using the OA1 Bootloader (I believe it's KitKat) which I flashed with Odin.
I would like to use Safestrap to flash the .zip required to use Xposed on Lollipop. I read that to get safestrap somewhat functioning, you have to flash a stock kernal to get it to boot into safestrap, flash your .zip, then flash another kernal to ensure that the phone actually boots after using safestrap.
I can't find a straightforward answer as to what kernals I should be using to do this for my specific phone and if it is even possible. I will list my phone's details below.
Thank you!
-AT&T Samsung Galaxy S5 G900A
-Lollipop 5.0 (Pre-rooted OF3 Stock ROM)
-G900A OA1 Bootloader (KitKat bootloader?)
Click to expand...
Click to collapse
Hello, and thank you fro using XDA Assist!
Please go ahead and create an account, so you can post in other forums.
Then, check out the > AT&T Samsung Galaxy S 5 > AT&T Galaxy S5 Q&A, Help & Troubleshooting forum, and post your question there.
Your device experts can be found there and will be happy to help.
Good luck!

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Hi,
Thanks for using XDA Assist.
You probably installed a wrong version of TWRP. Try flashing a more recent of TWRP: http://forum.xda-developers.com/gra...om-recovery-twrp-2-8-7-0for-lollipop-t3190351

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