Urgent help s4 sgh i337 - Galaxy S 4 Q&A, Help & Troubleshooting

How can i unlock the bootloader of an s4 sgh i337

Can't be done by an end-user.
AT&T forum is here: https://forum.xda-developers.com/galaxy-s4-att

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rooting s4

do you root s4 i337m with the new nc1 file same asa other s4

[Q] S4 i9505 vs SGH-M919

Can I used roms from S4 i9505 on phone SGH M919? Thanks a lot

Motherboard of S4 i337 in S4 i9505?

I need help..
Hi, I damaged the motherboard of my S4 i9505 and I can buy a motherboard of the S4 i337, this serves me in my S4 i9505? Thank you very much:good:, pardon for my poor english
Try to get an i337m motherboard instead of the i337.
Not sure if the i337 or i337m will fit in a 9505 phone.
Thanks you
http://www.ecever.com/blog/differen...4-i9500-i9505-i337-m919-l720-i545-lcd-screen/
The I337 and I337M motherboards cannot be mated with an I9505 display.

why there are ROMs for S4 sgh i337?

why there are Roms if it can't be installed on s4 i337 AT&T because of its bootloader issues. I am confused please tell me about it. I'm a complete newbie.
There are other versions of the s4 (sgh-i337m) that use the same hardware as the AT&T s4 that do not have a locked boot loader.
Some sgh-i337 phones have not been updated beyond 4.2.2 so they will not have a locked boot loader.

Upgrade Android Version on Samsung S4 SGH I337 - Rooted phone.

Hello Experts,
I am having a Samsung SGH I337 (AT&T) rooted phone that is current on Android Version 4.4.2 (Baseband Version 3.4.0-505595). I would like to know if there is a safe way to upgrade to Android Lollipop or to anything above that version. Please advice. Thanks in advance.
Jay
Ask in the XDA AT&T Galaxy S4 Forums. You posted this in the International S4 Forums, and in the wrong section of that forum to boot. Mods will move this soon to the correct place.

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