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Help with T-Mobile Galaxy s4

Connor02

Connor02

Lurker
So, i'm a newb when it comes to android phones, I tried to flash 5.0 on my galazy s4 as Tmobile wont send update for 5.0, I went thru a few websites and even some videos, they recommended ROM Manager, so I used it, I installed the CWM bootloader but would now like to get rid of it because when I try to factory reset my phone or go to the bootloader it says in big letters in the middle of the screen: System software not authourized by AT&T has been found on your phone, and up in the top left in super tiny red letters it says, SECURE FAIL: KERNEL.

Keep in mind, this is an AT&T phone that is unlocked and is being used on the T-Mobile network.

My main question from this thread is, is there a way to get rid of this boot loader?
 
Yes I do, I don't see anything on there that says how to remove the bootloader, although if it is an easy process from here I am ok with flashing a rom to the phone.
The thing that concerned me was the SECURE FAIL: KERNEL
I didin't know if that would brick my phone if I messed with anything else...
 
The i337 has a locked bootloader. No custom recovery except for Safe Strap.
If you can still get into download mode, you are going to have to flash back to stock.
The link above has everything available for the i337 including stock firmware.
 
Not sure on the kernel except that you tried to change the stock recovery with CWM recovery.

The bootloader is different from recovery. The bootloader is locked and if you try to alter parts of it, it will recognize that it has been modified and not bootup or operate normally.

The only way I know of to get your phone working correctly again and have the stock recovery is to flash the stock firmware.
 
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