[Q] Downgrade Galaxy s4 I9505 - Galaxy S 4 Q&A, Help & Troubleshooting

after upgrading 4.3 my network reception is [email protected] constant network droping, no HSPA at all. now i'm a total noob here. plz help me about which modem i need to flash? my baseband is I9505zhuemj7. Thank you...
Or can i downgrade it to 4.2.2 ? i don't care about knox warranty bit, cause i already blew it by rooting

badbd09 said:
after upgrading 4.3 my network reception is [email protected] constant network droping, no HSPA at all. now i'm a total noob here. plz help me about which modem i need to flash? my baseband is I9505zhuemj7. Thank you...
Or can i downgrade it to 4.2.2 ? i don't care about knox warranty bit, cause i already blew it by rooting
Click to expand...
Click to collapse
You can start by going to http://www.sammobile.com/firmwares/2/ to check if you are using the correct firmware.
Once you got that, head to http://forum.xda-developers.com/showthread.php?t=2192025 and find the firmware and flash it via Odin. And make sure to read the instructions, whether you need to flash both GSM and LTE modems.

yaa. but i'm from bangladesh and my s4 is importe from HK. now is there any modem driver for my carrier 'teletalk' ?
BTW what if i flash my I9505 with a 9500 modem, cause that version has TML, which is code for bangladesh.

If you updated to 4.3 via an OTA or Kies or flashed a stock odin rom you'll have a knox boot loader. Once you have a knox boot loader you can not downgrade to any lower version. You can flash modems though there is a thread in the S4 General section with various modems have a look in there.
Sent from my GT-I9505 using Tapatalk

nikzDHD said:
If you updated to 4.3 via an OTA or Kies or flashed a stock odin rom you'll have a knox boot loader. Once you have a knox boot loader you can not downgrade to any lower version. You can flash modems though there is a thread in the S4 General section with various modems have a look in there.
Sent from my GT-I9505 using Tapatalk
Click to expand...
Click to collapse
thnaks, i'm trying various modems now. it sounds extremely stupid but has anyone tried to flash with a GT-I9500 modem?

badbd09 said:
thnaks, i'm trying various modems now. it sounds extremely stupid but has anyone tried to flash with a GT-I9500 modem?
Click to expand...
Click to collapse
Don't just stick with modems for your phone.
Sent from my GT-I9505 using Tapatalk

badbd09 said:
thnaks, i'm trying various modems now. it sounds extremely stupid but has anyone tried to flash with a GT-I9500 modem?
Click to expand...
Click to collapse
Yes because it is extremely stupid.

Related

[Q] ODIN flashing older rom.

Hey guys so i have heard that if i install the old firmware for my s4 from sammobile using Odin one from early 2013 that it will give me access to service menu so that i can unlock my phone. So my question is that is it 100% safe to Odin flash the older 4.2.2 rom when i am on 4.3? Can i flash it unlock my phone then upgrade my phone to a custom rom again? Thank you
Sent from my SGH-M919V using xda app-developers app
Do not do this. This will brick your phone. If I am not mistaken, there is a method to unlock mk2 in the general section.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
zee24 said:
Hey guys so i have heard that if i install the old firmware for my s4 from sammobile using Odin one from early 2013 that it will give me access to service menu so that i can unlock my phone. So my question is that is it 100% safe to Odin flash the older 4.2.2 rom when i am on 4.3? Can i flash it unlock my phone then upgrade my phone to a custom rom again? Thank you
Sent from my SGH-M919V using xda app-developers app
Click to expand...
Click to collapse
You should ask this in the t mobile s4 forum. I believe your bootloader is unlocked and you can flash an older firmware version. But check there first. This is the att s4 forum. It can't be done on the at&t s4.
Is the service menu missing on the stock T-mo 4.3 ?
Nooo guys i have an unlocked bootloader i have the s4 that is very similar to the tmobile and it's the same as the Canadian versions. And yes the Canadian version which is 1337m and mine which is m919v don't have access to service menus but i have flashed a lot of custom roms simply by philz recovery so doesn't that mean i have an unlocked bootloader?
zee24 said:
Nooo guys i have an unlocked bootloader i have the s4 that is very similar to the tmobile and it's the same as the Canadian versions. And yes the Canadian version which is 1337m and mine which is m919v don't have access to service menus but i have flashed a lot of custom roms simply by philz recovery so doesn't that mean i have an unlocked bootloader?
Click to expand...
Click to collapse
If you're on 4.3 I believe you also have Knox, in which case I don't think you'll be able to go back to 4.2.2. Read through this http://forum.xda-developers.com/showthread.php?p=40903040
jd1639 said:
If you're on 4.3 I believe you also have Knox, in which case I don't think you'll be able to go back to 4.2.2. Read through this http://forum.xda-developers.com/showthread.php?p=40903040
Click to expand...
Click to collapse
I'm actually running a custom rom i shouldve mentioned im on phoenix rom. So i don't have knox at the moment. Does that matter?
zee24 said:
I'm actually running a custom rom i shouldve mentioned im on phoenix rom. So i don't have knox at the moment. Does that matter?
Click to expand...
Click to collapse
Did you ever take the ota to 4.3? Do you know what firmware your device is on? A 4.3 custom Rom wouldn't have knox but if you took the official update to 4.3 you would have Knox.
jd1639 said:
Did you ever take the ota to 4.3? Do you know what firmware your device is on? A 4.3 custom Rom wouldn't have knox but if you took the official update to 4.3 you would have Knox.
Click to expand...
Click to collapse
Hmm i think then yes i might have knox. I think at one point i might have been on stock 4.3 is there any way that i can check to see if i have knox? And if i have knox i cant flash an older stock firmware for my s4?
zee24 said:
Hmm i think then yes i might have knox. I think at one point i might have been on stock 4.3 is there any way that i can check to see if i have knox? And if i have knox i cant flash an older stock firmware for my s4?
Click to expand...
Click to collapse
Idk, I'm not that familiar with your device. From the little bit of reading I've done I would say no, you can't flash an older firmware. But again, I'd post this question in the t mobile forum. They'd be more familiar with your device.
zee24 said:
Hmm i think then yes i might have knox. I think at one point i might have been on stock 4.3 is there any way that i can check to see if i have knox? And if i have knox i cant flash an older stock firmware for my s4?
Click to expand...
Click to collapse
Did you ever update you device with kies or ever take an over the air update ? It's fine if you were on a stock based 4.3 rom as long as you never took an official update. If so then you can't go back. Just flashing a stock 4.3 rom won't change that status but the 4.3 bootloader would.
You would have know by checking in settings under SE
hednik said:
Did you ever update you device with kies or ever take an over the air update ? It's fine if you were on a stock based 4.3 rom as long as you never took an official update. If so then you can't go back. Just flashing a stock 4.3 rom won't change that status but the 4.3 bootloader would. You would have know by checking in settings under SE
Click to expand...
Click to collapse
I remember i soft bricked my phone one time and had to flash my firmware but the 4.3 latest one from sammobile and after i did that i got knox but i believe i already tripped the knox counter because in download mode it says 0x1 so i guess i cant?

[Q] Downgrade from 4.4.2 to 4.3

How can i do this? Note 3 stock. With Odin is always "failed".. It it Knox? Thanks
You can't do it mate.... You.... And me... And a few others are now stuck on kitkat
Sent from my SM-N9005 using Tapatalk
miglio1990 said:
How can i do this? Note 3 stock. With Odin is always "failed".. It it Knox? Thanks
Click to expand...
Click to collapse
You really need to read a lot more before you start messing around flashing things on your device. It's ALL around this forum about not being able to downgrade.
alom5 said:
You can't do it mate.... You.... And me... And a few others are now stuck on kitkat
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Well I knew what I was getting myself into, flashed it pretty much a few mins after it leaked lol
Samsung build some protection so you can't downgrade, for how long that's another story. Anything software can be broken, it's just the matter of effort, keep your eyes open, maybe somebody will find way.
radicalisto said:
You really need to read a lot more before you start messing around flashing things on your device. It's ALL around this forum about not being able to downgrade.
Well I knew what I was getting myself into, flashed it pretty much a few mins after it leaked lol
Click to expand...
Click to collapse
If i had asked, it means i haven't found anything!!
Anyway, thanks to all
miglio1990 said:
If i had asked, it means i haven't found anything!!
Anyway, thanks to all
Click to expand...
Click to collapse
All due respect, it is everywhere, search feature or read first 5 threads or so - At least you got 100% answer though. :good:
radicalisto said:
All due respect, it is everywhere, search feature or read first 5 threads or so - At least you got 100% answer though. :good:
Click to expand...
Click to collapse
I searched, i read... O know How to use a forum. Unfortunately i was not able to find that
I just read an interesting news. Apparently, some canadian phones ( SM-N900W8 ) when flashed with the newly released Mexican 4.4.2 can downgrade back to a 4.3 firmware. Did somebody who flashed the Poland 4.4.2 tried flashing it and maybe you guys can downgrade to 4.3 after as well? It's just an idea I haven't really tried it.
Sent from my SM-N9005 using xda app-developers app
hey_joe said:
I just read an interesting news. Apparently, some canadian phones ( SM-N900W8 ) when flashed with the newly released Mexican 4.4.2 can downgrade back to a 4.3 firmware. Did somebody who flashed the Poland 4.4.2 tried flashing it and maybe you guys can downgrade to 4.3 after as well? It's just an idea I haven't really tried it.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
Can you link me? please @hey_joe
hey_joe said:
I just read an interesting news. Apparently, some canadian phones ( SM-N900W8 ) when flashed with the newly released Mexican 4.4.2 can downgrade back to a 4.3 firmware. Did somebody who flashed the Poland 4.4.2 tried flashing it and maybe you guys can downgrade to 4.3 after as well? It's just an idea I haven't really tried it.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
That firmware won't work on our 9005 wool it? I will try it if it will
Sent from my SM-N9005 using Tapatalk
hey_joe said:
I just read an interesting news. Apparently, some canadian phones ( SM-N900W8 ) when flashed with the newly released Mexican 4.4.2 can downgrade back to a 4.3 firmware. Did somebody who flashed the Poland 4.4.2 tried flashing it and maybe you guys can downgrade to 4.3 after as well? It's just an idea I haven't really tried it.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
Where did you see this?
---
EDIT: Reports here: http://forum.xda-developers.com/showthread.php?t=2608178&page=54
can't you revert to an older BL using Odin?
CVonV said:
can't you revert to an older BL using Odin?
Click to expand...
Click to collapse
Nope.... Isn't allowed... Once the new bootoader is flashed you are stuck with it and it won't support older firmwares...
radicalisto said:
Can you link me? please @hey_joe
Click to expand...
Click to collapse
Sorry I was late. Just quickly posted that one while on brake at work and wasn't able to get back online until now.
Edit:
I don't know if you guys can follow this guide and just substitute the files from your original 4.3 phone's firmware and make it work for your phones.
ultramag69 said:
Nope.... Isn't allowed... Once the new bootoader is flashed you are stuck with it and it won't support older firmwares...
Click to expand...
Click to collapse
I also have an S3 i9305 with tripped knox bootloader after upgrading to 4.3. I have not tried to flash stock 4.1.2 on it after that, but it is not a problem to flash a custom 4.1.2 or 4.2.2 custom ROM on it.
Is it only samsung signed ROMs that won't boot if it's downgraded? And custom ROMs is not a problem as long as you don't try to downgrade the bootloader?
Sent from my SM-N9005 using Tapatalk
ultramag69 said:
Nope.... Isn't allowed... Once the new bootoader is flashed you are stuck with it and it won't support older firmwares...
Click to expand...
Click to collapse
that sux! but what is the point of being able to select a BL file in Odin then?
Samsung did changes on the bootloader since MJ7, once updates cannot downgrade.
Also new firmware OS need new bootloader, means once up to latest KitKat that need new bootloader, they is no way to revert to older version as of now.
Andrewtst said:
Samsung did changes on the bootloader since MJ7, once updates cannot downgrade.
Also new firmware OS need new bootloader, means once up to latest KitKat that need new bootloader, they is no way to revert to older version as of now.
Click to expand...
Click to collapse
Well for us SM-N900W8 users it's possible to flash back to 4.3. Just took Mexican 4.4.2 for a spin and to me looks the same as 4.3 so I'm back to 4.3 as there's not that many 4.4.2 custom roms out yet.
Well this is being tried by me in a couple of minutes!
Sent from my SM-N9005 using XDA Premium 4 mobile app
radicalisto said:
Well this is being tried by me in a couple of minutes!
Sent from my SM-N9005 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Goodluck :good:

[Q] Galaxy S4 i337/i337m/i9505 ROM compatiblity

Just wondering about the safety of installing roms made for the i337 on the i337m or i9505. I recall reading a big thread on XDA talking about this earlier. Thanks.
I've got the i337m and I've never had a issue. On a i9505g Rom now. You can flash anything to anything as long as bootloader isn't locked
Sent from my GT-I9505G using xda app-developers app
tombeach22 said:
I've got the i337m and I've never had a issue. On a i9505g Rom now. You can flash anything to anything as long as bootloader isn't locked
Sent from my GT-I9505G using xda app-developers app
Click to expand...
Click to collapse
Except Exynos?
jtl999 said:
Except Exynos?
Click to expand...
Click to collapse
No exynos, correct.
Sent from Black<3's I337 running Hyperdrive
Hi friends: as you know a 4.4.2 leak for SGH-I337 is on XDA, thanks to designgears. Actually, there is a .tar version, odin flashable. Can anyone tell me if this is compatible with unlocked canadian I337M and can be safely flashed?
guerouig said:
Hi friends: as you know a 4.4.2 leak for SGH-I337 is on XDA, thanks to designgears. Actually, there is a .tar version, odin flashable. Can anyone tell me if this is compatible with unlocked canadian I337M and can be safely flashed?
Click to expand...
Click to collapse
im runnig i9505 on my i337m right now
ron31 said:
im runnig i9505 on my i337m right now
Click to expand...
Click to collapse
first thx a lot.
but I'm on MK6 (4.3) right now, would there be any issue with Knox?
guerouig said:
first thx a lot.
but I'm on MK6 (4.3) right now, would there be any issue with Knox?
Click to expand...
Click to collapse
The leak won't work for you because it's a full ODIN package. It's signed for I337 and not the I337M, and is not in a flashable zip form. Even if you could use it, you'd have a locked bootloader afterwards and never have recovery again. You'll have to use some other 4.4.2 ROM, maybe check the i9505 development section for a recovery flashable one.
DeadlySin9 said:
The leak won't work for you because it's a full ODIN package. It's signed for I337 and not the I337M, and is not in a flashable zip form. Even if you could use it, you'd have a locked bootloader afterwards and never have recovery again. You'll have to use some other 4.4.2 ROM, maybe check the i9505 development section for a recovery flashable one.
Click to expand...
Click to collapse
there are defenatly lots of roms to choose from here
DeadlySin9 said:
The leak won't work for you because it's a full ODIN package. It's signed for I337 and not the I337M, and is not in a flashable zip form. Even if you could use it, you'd have a locked bootloader afterwards and never have recovery again. You'll have to use some other 4.4.2 ROM, maybe check the i9505 development section for a recovery flashable one.
Click to expand...
Click to collapse
Thx so much. It's clearer now for me; it is indeed a tar file signed for I337 I was wrongly thinking that since I337M and I337 both share the same hardware rom compatibility might be possible, but I guess the AT&T factor plays the game otherwise. I'll check what's cooking in i9505 thread.
So, If I understand you correctly, an i9505 flashable zip, like wamalite for example, would work for i337m, is that so?
guerouig said:
Thx so much. It's clearer now for me; it is indeed a tar file signed for I337 I was wrongly thinking that since I337M and I337 both share the same hardware rom compatibility might be possible, but I guess the AT&T factor plays the game otherwise. I'll check what's cooking in i9505 thread.
So, If I understand you correctly, an i9505 flashable zip, like wamalite for example, would work for i337m, is that so?
Click to expand...
Click to collapse
Yes. Any ROM in a flashable zip for any variant of the S4 except the i9500 (exynos model) will work on your device. I9505 are the easiest to get working, some other variant ROMs may need tweaking to work well. There's a thread about running other carrier ROMs in the general section.
Sent from Black<3's I337 running Hyperdrive
DeadlySin9 said:
Yes. Any ROM in a flashable zip for any variant of the S4 except the i9500 (exynos model) will work on your device. I9505 are the easiest to get working, some other variant ROMs may need tweaking to work well. There's a thread about running other carrier ROMs in the general section.
Sent from Black<3's I337 running Hyperdrive
Click to expand...
Click to collapse
last, would there be any knox issues if I flashed I9505 roms or do I have to simply remove knox? I also read that someone who flashed I9505 rom onto his I337m tulred his device to I9505 as well; is that "normal"
guerouig said:
last, would there be any knox issues if I flashed I9505 roms or do I have to simply remove knox? I also read that someone who flashed I9505 rom onto his I337m tulred his device to I9505 as well; is that "normal"
Click to expand...
Click to collapse
I don't know much about how knox affects custom recovery or if you can flash without tripping it. I know for sure it won't stop anything but would just simply void warranty. If you flash an I9505 ROM then because of the build.prop it will tell you it's an I9505, but it's still an I337M, you can't like use the i9505 ODIN files or anything just because you have an i9505 rom.
DeadlySin9 said:
I don't know much about how knox affects custom recovery or if you can flash without tripping it. I know for sure it won't stop anything but would just simply void warranty. If you flash an I9505 ROM then because of the build.prop it will tell you it's an I9505, but it's still an I337M, you can't like use the i9505 ODIN files or anything just because you have an i9505 rom.
Click to expand...
Click to collapse
you've been extremely helpfull, thx a lot bro.
I've been trying to get either carbon Kitkat or aosb 1.2.7 on my i337, but when I try to flash the rom in twrp 2.6.3.1 it keeps giving me an error saying that the rom is only for jflte, jfltexx, i9505, gt-i9505. I don't know how to remedy this problem, am I stuck out?

Losing signal after flashing kitkat rom

Anyone else experiencing this problem? I was running stock 4.2.2 with no problems and now I'm having erratic signal problems. I've tried 3 different roms and even got roms and they are all the same. Never had this problem on stock. Can I just flash a lower to rectify my problem or is this a kit at related issue?
kingofthebraves said:
Anyone else experiencing this problem? I was running stock 4.2.2 with no problems and now I'm having erratic signal problems. I've tried 3 different roms and even got roms and they are all the same. Never had this problem on stock. Can I just flash a lower to rectify my problem or is this a kit at related issue?
Click to expand...
Click to collapse
The most normal is that u have wrong baseband. Dial *#1234# and attach it here.
* SOLUTION: Flash 2 times same Kit Kat firmware :highfive:
Joku1981 said:
The most normal is that u have wrong baseband. Dial *#1234# and attach it here.
* SOLUTION: Flash 2 times same Kit Kat firmware :highfive:
Click to expand...
Click to collapse
Sorry but do you mean I have to flash the same rom again? No need for full wipe or anything?
AP:I9505XXUGNE5
CP: i9505ZHUDMI1
Do you have TWRP recovery? If not flash that recovery and then flash the rom you want after a full wipe.
I dont know why but some roms give no signal when flashed with other recovery.
kingofthebraves said:
Sorry but do you mean I have to flash the same rom again? No need for full wipe or anything?
AP:I9505XXUGNE5
CP: i9505ZHUDMI1
Click to expand...
Click to collapse
I see your CP is i9505ZHUDMI1. You should flash this ONE for avoid problems.
* COUNCIL: Always dial *#1234# when u finish of flash NEW firmware for see if all is ok. In this case have to appears:
PDA: I9505ZHUFNB3
CSC: I9505ZZHFNB3
MODEM: I9505ZHUFNB3
That's the stock Rom for the hk s4 variant. Is there anyway I can continue to use custom roms while getting back my signal strength?
Sent from my SM-N9005 using Tapatalk
kingofthebraves said:
That's the stock Rom for the hk s4 variant. Is there anyway I can continue to use custom roms while getting back my signal strength?
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Yeah, you need a custom recovery (TWRP/Philz Touch) for install customs roms. This will active KNOX (KNOX 0x1) and will void ur warranty. Only for your info :highfive:
Joku1981 said:
Yeah, you need a custom recovery (TWRP/Philz Touch) for install customs roms. This will active KNOX (KNOX 0x1) and will void ur warranty. Only for your info :highfive:
Click to expand...
Click to collapse
I'm on a custom rom now with a custom recovery installed.
I'm sorry but I am confused. Are you trying to say that after flashing a Rom I need to flash a radio that's for hk?
The file you told me to download is 1.5gb I'm assuming it's a full Rom. Is there any way I can continue to use echo Rom while changing pda only?
Sent from my SM-N9005 using Tapatalk
kingofthebraves said:
I'm on a custom rom now with a custom recovery installed.
I'm sorry but I am confused. Are you trying to say that after flashing a Rom I need to flash a radio that's for hk?
The file you told me to download is 1.5gb I'm assuming it's a full Rom. Is there any way I can continue to use echo Rom while changing pda only?
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
You should tell me before that u had a custom rom installed. Well, things change now.
The problem maybe is the custom rom u have installed. Install one older version or simply ask in correct thread of the custom rom.
Lol I've tried echo Rom, omega Rom and Ge roms and they all have signal issues.
Sent from my SM-N9005 using Tapatalk
kingofthebraves said:
Lol I've tried echo Rom, omega Rom and Ge roms and they all have signal issues.
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Flash again STOCK ROM android 4.2.2 if all was ok for ya before and problem solved :highfive:

i337m updated to NE3 and lost all mobile signal.

Please help me.. I have updated a SGH - I337m with Claro on 4.2.2 to a stock 4.4.2 NE3 trought ODIN and lost the signal inmediately. Emergency Calls only. Not registered on network when I try to conect manualy.
I`m not shure that my phone has unlocked and now is locked new bud I dont have a Claro Sim card, I use TIGO.
I have tried to unlock with RegionLock Away and not work for me, I have tried rooting, instaled TWRP, Philz Touch and Safestrap and I cant change my modem to try the unlock again. I tried flashing modems MF3, NC1, NE1, and I cant.
I tried too flash stock firmware 4.4.2 NE1, NC1, NE 2 , custom rom 4.4.2 and the baseband keep ever the same NE3.
Not work the Codes like *#0011#
Please help me what can I do.
My Bootloader is NE3.
You will probably have more luck in the AT&T GS5 thread.
frostedunit said:
You will probably have more luck in the AT&T GS5 thread.
Click to expand...
Click to collapse
Thank you.. bud, why did you say that? I flashed only I337m stock Firmware..
Because this forum is for the L720 Sprint GS4
frostedunit said:
Because this forum is for the L720 Sprint GS4
Click to expand...
Click to collapse
i´m so sorry.
joachamob said:
i´m so sorry.
Click to expand...
Click to collapse
No biggie

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