Hi folks, I'm thinking about getting the SGH-I337 (AT&T version of the s4) which from what I've heard is identical to the i9505 but flashed with a different Modem and ROM. What I was wondering was if it was possible to flash the i9505 ROM + Modem onto the SGH-I337 and essentially "convert" it to the i9505. I was wondering if anyone had more details on the hardware and if there were any issues that I'm just not seeing. I see that the ROM is not an issue. More curious about the Modem. I would like to use the phone on LTE in the UK
I'm looking for a 32GB version of the i9505 and so far, the only option I have is the SGH-I337.
Any thoughts?
dilwaala said:
Hi folks, I'm thinking about getting the SGH-I337 (AT&T version of the s4) which from what I've heard is identical to the i9505 but flashed with a different Modem and ROM. What I was wondering was if it was possible to flash the i9505 ROM + Modem onto the SGH-I337 and essentially "convert" it to the i9505. I was wondering if anyone had more details on the hardware and if there were any issues that I'm just not seeing. I see that the ROM is not an issue. More curious about the Modem. I would like to use the phone on LTE in the UK
I'm looking for a 32GB version of the i9505 and so far, the only option I have is the SGH-I337.
Any thoughts?
Click to expand...
Click to collapse
Yes you can flash i9505 rom but not sure if you can flash i9505 modem. The way everybody is doing it, to insure ATT network compatibility, is to flash just the i9505 rom while keeping the ATT radio. By doing so, your device ID will switch to GT-I9505 and the SGH-I337 will be gone.
So from what I'm understanding he can flash the i9505 ROM which by he means stock firmware? So I can flash i9505 5.0.1 lollipop stock firmware on my i337? That's what I understood. Is it true?
The bootloader on the i337 may be locked so flashing the i9505 stock firmware onto the i337 may not be possible. I am just guessing here as I have the i337m which does not have a locked bootloader.
audit13 said:
The bootloader on the i337 may be locked so flashing the i9505 stock firmware onto the i337 may not be possible. I am just guessing here as I have the i337m which does not have a locked bootloader.
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Click to collapse
Mine is not locked, I bought it used and it was rooted already, so I installed twrp through flashify and I am using cm12. The reason I'm asking is because in sammobile there isn't any lollipop not even kitkat firmwares for my i337 model. So I wanted to know if flashing the i9505 kitkat/lollipop stock firmware on my device could be fine. If not, I can keep on using cm12.
Att never released a complete kk or LP rom. These were only available via ota updates which explains why they cannot be found on sammobile.com.
audit13 said:
Att never released a complete kk or LP rom. These were only available via ota updates which explains why they cannot be found on sammobile.com.
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Click to collapse
How could I update it then? I'll be stock in jellybean 4.2.2 because with no root I never received the ota update nor for kikat and not even lollipop.
The rom must be running a completely stock 4.2.2 rom, including stock recovery with no root, to install ota updates.
You could look in the general or development forum to see if anyone has made a flashable zip for the ota updates. The again, the ota updates may not work without an updated bootloader and modem which may mean locking the bootloader.
Hello everyone.
Today I flashed the latest ROM 4.2.2 of Jamal and I skipped this update.
I do not know if this is normal, but it seems that I detect my I9505 as a S4 Official GE. Guys do you think? I have fear of giving mobile update and I brick the phone.
Screenshots:
The OTA would fail if you tried to apply it.
How to flash back old bootloader my i9505 now na5 4.4.2 new bootloader but i want 4.3
I'm trying to flash 4.3 preroted but gives an error ?
nomenore said:
How to flash back old bootloader my i9505 now na5 4.4.2 new bootloader but i want 4.3
I'm trying to flash 4.3 preroted but gives an error ?
Click to expand...
Click to collapse
pretty sure that you cant.
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I'm currently running on 4.2.2 Jelly Bean on my ATT Galaxy S4(SGH-i337). I want to upgrade to the latest Kitkat 4.4.2 Stock Update. My ATT S4 is rooted and unlocked to work in India.
Can someone tell me:-
- If I need custom recovery for this ?
-If Yes/ No how do I go about it ?
-Will I lose root & and Carrier unlock after update ?
- Link to the Stock 4.4.2 Kitkat OTA
ashishk2 said:
I'm currently running on 4.2.2 Jelly Bean on my ATT Galaxy S4(SGH-i337). I want to upgrade to the latest Kitkat 4.4.2 Stock Update. My ATT S4 is rooted and unlocked to work in India.
Can someone tell me:-
- If I need custom recovery for this ?
-If Yes/ No how do I go about it ?
-Will I lose root & and Carrier unlock after update ?
- Link to the Stock 4.4.2 Kitkat OTA
Click to expand...
Click to collapse
If you update, depending on which firmware you are on now, you will lose your ability to boot custom roms. If you have the MDL firmware, I suggest keeping it as you can use LOKI to bypass the locked bootloader and boot custom roms and recoveries. Now to answer your questions.
You can use a custom recovery to update to 4.4.2 if a .zip file for the update is available. You can also use ODIN to flash the update. You will lose root unless you use a pre-rooted update file. The stock 4.4.2 update is in the General forums I believe.
Hello,
I want to downgrade my S4 LTE from 4.4.2 to 4.2.2. How can i do it.
And i want to download this rom but i'm not premium user. How can i download it?
Last one.
My phone have 3g, 4g problem. I'm using only 2g. I did try this but not working. Does anyone have an idea?
https://forum.xda-developers.com/galaxy-s4/help/i9505-doesnt-3g-t2998527
https://www.sammobile.com/firmwares/galaxy-s4/GT-I9505/XSI/download/I9505XXUBMGA/18227/
If you try to downgrade the bootloader from 4.4.2 to 4.2.2, you could wind up hard-bricking the phone as the bootloader cannot be downgraded.
annoying :/