Database Info

[GUIDE] Enable AWS on Samsung Galaxy IV AT&T i337 & Canadian i337M

This guide will help you enable AWS on AT&T Samsung Galaxy S4 i337 or Canadian Samsung Galaxy S4 i337M
-------------------------------------------------------------------------------------------------------------------------------------
All Files Have been Included In The Attachment ( See Below )
Instructions
1. Run & Install QPST Setup build 323 on your windows computer [File attached below]
2. [ With Latest Android Updates on S4, you don't need this step(2) which requires an application to be installed which is attached below named as phoneutil.apk, skip this step, How to know if you don't need, when Dial *#0808# on your dial pad if it shows a prompt poped up you don't need this step ]
Copy phoneutil.apk (attached to this post) to your phone & Install it on your phone -> go to myfiles (on your phone), browse and install it.
3. Disconnect your phone from computer & dial:
For stock android versions:
Dial *#7284# on your phone dialer and hit “Qualcomm USB settings” button
For Updated Android Versions
*#0808# for new updated android S4
4. Check “RNDIS + DM + MODEM” then connect to computer again. (Some people got it working with "DM + MODEM + ADB")
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5.Your windows will install driver ( Samsung Kies if is installed, it will install drivers for your device )
6. Next, open up Device Manager on your computer and find “Samsung Mobile USB Serial Port” under Ports.
Make a note of the COM number (usually the second one)
7. Start QPST Confirguration application
8. Press Add New port, Uncheck “Show Serial and USB/QC Diagnostic ports only”, choose the COM port with the number you noted earlier then hit “OK”.
10. Choose “Start Clients” and choose “SOFTWARE DOWNLOAD”.
11. Choose the “Backup” tab, hit “Browse” for Port and choose your COM number, hit “Browse” for QCN File and make a new file name for the QCN file you will be making a backup of. We will be backing up the NV Memory on your phone just in case you mess up something. Then hit Start.
12. Hit the “Restore” tab, set Port to your COM number. Next, choose the QCN File as “337_AWS.qcn”. (I have attached below)
Then hit “Start” button. If you get a warning just hit “OK”.
13. Once that’s done restoring, your phone will reboot. Just give it about a minute as it will reboot. Once rebooted, you can insert your T-Mobile/Wind/Mobilicity SIM card and start enjoying
Tested 100% Works with all AWS network flawlessly.
FAQ
Will this void my warranty?
No.
What to do if i get this error ? "The model number in the QCN file and the phone do not match. Do you still want to restore the phone with this file?"
It is safe to continue
Will it work with other networks Rogers, Bell, Fido ?
Yes.
Phone has to be sim unlocked for this patch to work?
Yes, phone must be sim unlocked
Will it work with Custom ROMs?
Many custom ROMs work, some ROMs don't work because USB Qualcomm Setting doesnt pop up.
Is it permanent?
When you hard reset your phone(Some custom roms require hard resetting), this needs to be patched again following this guide from beginning other than that, it stays patched even if you restart it.
You are responsible on following the instructions carefully, instructions are provided assuming user has adequate knowledge to carry out basic operations. For those who know, this is done exactly the same way the NOTE 2 was done.
Special Thanks: to FastGsm.com for the phoneutil.apk
I would also like to thank the XDA Team and all those members who'd come up with this idea on the note 2 & before, indeed it wouldn't have been possible without them, originally by sjravi and other respected members
Now Buy me a coffee Donate
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=R49VLCBR45322
Attachment:
QPST Software: Download
All Other Files: Download
Temporary AWS Patch Guide for Samsung S3 i747 Coming Soon Using Smart Apps Makes It Convenient to patch again on ever restart
chen sheng - thanks for donation
Saad Al Haddawi - thanks for donation
Pierluigi Zamparella - thanks!
and many others thank you for your donations.

Before and after...
Sent from my SGH-I337M

OP - Can you please add mention and thanks to the team here on XDA that originally discovered this workaround for prior Samsung models -- I believe they deserve the majority of thanks as it was their methods that make today's methods possible.

WorldIRC said:
OP - Can you please add mention and thanks to the team here on XDA that originally discovered this workaround for prior Samsung models -- I believe they deserve the majority of thanks as it was their methods that make today's methods possible.
Click to expand...
Click to collapse
I was about to point that out. The methods of previous model that prior known to work is EXACT SAME, just the little app which allows us to access that menu for S4. I also would like to know about band 2600 and if it stays intact for Rogers/Bell.

sonny21 said:
I was about to point that out. I also would like to know about band 2600 and if it stays intact for Rogers/Bell.
Click to expand...
Click to collapse
It does -- tested and verified B7 is still "enableable" in the Band Selection program *#2263# (shows a * once selected and I maintain SOS signal on Rogers 2600).

WorldIRC said:
It does -- tested and verified B7 is still "enableable" in the Band Selection program *#2263# (shows a * once selected and I maintain SOS signal on Rogers 2600).
Click to expand...
Click to collapse
Perfect. If you have Rogers sim, you should be able to get 2600 if you force it since most places get it unless you're in a area which doesn't. Maybe do a speed test to make sure but yeah it makes sense that it stays intact.

Folks,
Would it be necessary to change it back to MTP or MTP+ADB mode when done?
Sent from my SGH-I337M using Tapatalk 2

howipig said:
Folks,
Would it be necessary to change it back to MTP or MTP+ADB mode when done?
Sent from my SGH-I337M using Tapatalk 2
Click to expand...
Click to collapse
Yes, if you'd like to use the usb storage and ADB

howipig said:
Folks,
Would it be necessary to change it back to MTP or MTP+ADB mode when done?
Sent from my SGH-I337M using Tapatalk 2
Click to expand...
Click to collapse
Only if you use USB storage.
---------- Post added at 10:39 AM ---------- Previous post was at 10:38 AM ----------
sonny21 said:
Perfect. If you have Rogers sim, you should be able to get 2600 if you force it since most places get it unless you're in a area which doesn't. Maybe do a speed test to make sure but yeah it makes sense that it stays intact.
Click to expand...
Click to collapse
If you see my screenshot, the phone remained on B7 (2600) with 20MHZ (that is how we verify it is indeed LTE 2600). No need to worry about it "sticking". That being said, I won't be caught dead going out and getting a Rogers SIM card...ever

Would this re-lock the phone, if I unlocked it using the ServiceMenu method (i.e. not using a code)?
EDIT:
To answer my own question; patching the supplied .qcn *will not* re-lock the phone if it was unlocked using the ServiceMenu method.

hidea said:
Would this re-lock the phone, if I unlocked it using the ServiceMenu method (i.e. not using a code)?
Click to expand...
Click to collapse
No, it will not re-lock your device.

Best news ever for all S4 users.

would this have to be redone if at&t or alike releases a firmware OTA that updates the phone modem?

I am in sensory overload with all the bootloader excitement today and am trying to get this AWS TMO thing straight in my head. I have been bouncing back and forth between the the TMO threads and the AT&T threads trying to stay up to date and now am just utterly confused.
If I do this mod to my rooted and sim unlocked AT&T i337 and then put a TMO sim card in it I should be able to get the faster 3G connection speeds instead of being stuck on Edge speeds? Depending on my area and service availability of course.
Is this what I am getting with the AWS enabling? Or do we still need to flash a different modem to enable fully the TMO frequencies on the AT&T phones?

FireRaider said:
I am in sensory overload with all the bootloader excitement today and am trying to get this AWS TMO thing straight in my head. I have been bouncing back and forth between the the TMO threads and the AT&T threads trying to stay up to date and now am just utterly confused.
If I do this mod to my rooted and sim unlocked AT&T i337 and then put a TMO sim card in it I should be able to get the faster 3G connection speeds instead of being stuck on Edge speeds? Depending on my area and service availability of course.
Is this what I am getting with the AWS enabling? Or do we still need to flash a different modem to enable fully the TMO frequencies on the AT&T phones?
Click to expand...
Click to collapse
You don't need to flash any different modem, this will fully enable TMobile freq on your ATT S4
Yes you should be able to get faster 3G connection as well.

Will this enable t-mobile LTE on our phone or is that impossible?

How is this different from the service menu unlock posted last week?

ronj1986 said:
Will this enable t-mobile LTE on our phone or is that impossible?
Click to expand...
Click to collapse
T-Mobile LTE is already enabled. This mod does not affect that.
---------- Post added at 07:08 PM ---------- Previous post was at 07:07 PM ----------
Relys said:
How is this different from the service menu unlock posted last week?
Click to expand...
Click to collapse
SIM Unlock = Any SIM can be used
AWS Enable = T-Mobile 3G / 4G on 1700/2100 will work in addition to 1900 and LTE.

These are two different ideas.
The one you were asking is to unlock your phone which you already did, and the method listed here is to let you access AWS network.
Relys said:
How is this different from the service menu unlock posted last week?
Click to expand...
Click to collapse

SGH-I337M: LTE B7 (2600) retained AFTER the WCDMA B4 (AWS) mod
WorldIRC said:
It does -- tested and verified B7 is still "enableable" in the Band Selection program *#2263# (shows a * once selected and I maintain SOS signal on Rogers 2600).
Click to expand...
Click to collapse
WorldIRC,
I think people would be skeptical until they see an actual CONNECTION after the mod...
LTE Band 7 (2600) with 20MHz bandwidth...
UMTS Band IV (AWS)...

[HELP] Derped by new Z3 (or maybe it's SIM Locked)

I broke my Z3 and got a replacement a few days ago.
After I flashed pre-rooted 23.4.A.0.546, linked here, the he replacement shows the dreaded Invalid Card. Emergency calls only:
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I never tested the device, I went directly for the root, ZX discovery and pre-rooted flash.
As quick explanation:
I got the device.
I never inserted a SIM, I immediately followed the instruction to root a Z3 with a locked BL:
- downgraded phone with D6603_23.0.A.2.93 ftf linked here.
- ran giofroot exploit. used v3.1. had to run it twice.
- mounted /system rw with ES Explorer.
- installed Z3 Dualrecovery for locked BL.
- then flashed 23.4.A.0.546 linked here.
Phone turned on without a hitch.
When I placed the SIM, I noticed the Invalid Card notice.
Tried (and failed) attempts:
Since then, I've rolled back to D6603_23.0.A.2.93.
Installed PC Companion (eeew) and done a system repair.
Downloaded the latest firmware from xperifirm for Telcel's branded ROM.
nothing. device still says Invalid Card.
a few screenshots that might help someone get a better understanding of what happened;
can anyone confirm if I have a SIM-locked device or if I flashed the wrong firmware?
How can I roll back? what measurements can I take to better understand the problem?

Hobbess2099 said:
I broke my Z3 and got a replacement a few days ago.
After I flashed pre-rooted 23.4.A.0.546, linked here, the he replacement shows the dreaded Invalid Card. Emergency calls only:
I never tested the device, I went directly for the root, ZX discovery and pre-rooted flash.
As quick explanation:
I got the device.
I never inserted a SIM, I immediately followed the instruction to root a Z3 with a locked BL:
- downgraded phone with D6603_23.0.A.2.93 ftf linked here.
- ran giofroot exploit. used v3.1. had to run it twice.
- mounted /system rw with ES Explorer.
- installed Z3 Dualrecovery for locked BL.
- then flashed 23.4.A.0.546 linked here.
Phone turned on without a hitch.
When I placed the SIM, I noticed the Invalid Card notice.
Tried (and failed) attempts:
Since then, I've rolled back to D6603_23.0.A.2.93.
Installed PC Companion (eeew) and done a system repair.
Downloaded the latest firmware from xperifirm for Telcel's branded ROM.
nothing. device still says Invalid Card.
a few screenshots that might help someone get a better understanding of what happened;
can anyone confirm if I have a SIM-locked device or if I flashed the wrong firmware?
How can I roll back? what measurements can I take to better understand the problem?
Click to expand...
Click to collapse
Maybe this is important; when I downgraded the first time, I checked the following exemptions:
- KERNEL
- FOTA
- BASEBAND

Hobbess2099 said:
Maybe this is important; when I downgraded the first time, I checked the following exemptions:
- KERNEL
- FOTA
- BASEBAND
Click to expand...
Click to collapse
You did it wrong. NEVER check to exclude FOTA BASEBAND AND KERNEL.
baseband is what controls the radio (network) and it is very important. Flash again properly and don't check anything in exclude, but ALL in WIPE. In downgrade you MUST wipe everything.
Sent from my D6603 using Tapatalk

Thanks.
Is there a way to know which carrier is locking the device? Besides trying Sims from each carrier, I mean.
Sent from my SGP611 using Tapatalk

Hobbes2099 said:
Thanks.
Is there a way to know which carrier is locking the device? Besides trying Sims from each carrier, I mean.
Sent from my SGP611 using Tapatalk
Click to expand...
Click to collapse
No, but it is not probable that it is simlocked. It is almost 100% because you have wrong Baseband / Firmware combination. The older firmware (downgraded) does not support newer baseband you left in the device unflashed.

so I tried two different flashes including FOTA, BB and Kernel;
- D6603_23.0.A.2.93 from the original OP.
- latest firmware from xperifirm for Telcel's branded ROM; 23.4.A.0.546
in both cases, i left the entire Exception section unticked.
in both cases, after initual bootup, I still get the "Invalid Card." warning.
I'd like to start discarding possibilities.
- can flashing affect SIM lock? either way, locking or unlocking devices? My understanding is that it shouldn't. Could someone please confirm?
- is there a way with which carrier the devices is locked? The screenshot shows a [X] on network lock with a 5.
is there a way to find out that does not involve getting SIMs from every carrier?

Hobbes2099 said:
so I tried two different flashes including FOTA, BB and Kernel;
- D6603_23.0.A.2.93 from the original OP.
- latest firmware from xperifirm for Telcel's branded ROM; 23.4.A.0.546
in both cases, i left the entire Exception section unticked.
in both cases, after initual bootup, I still get the "Invalid Card." warning.
I'd like to start discarding possibilities.
- can flashing affect SIM lock? either way, locking or unlocking devices? My understanding is that it shouldn't. Could someone please confirm?
- is there a way with which carrier the devices is locked? The screenshot shows a [X] on network lock with a 5.
is there a way to find out that does not involve getting SIMs from every carrier?
Click to expand...
Click to collapse
Flash only firmware from XperiFirm. Others of unknown origin can be provider specific. However, the SIM LOCK is firmware independent.
I omitted some of your pictures. The X mark on Network means that is IS provider LOCKED and you have 5 retries to enter unlock code.

[HOW-TO] SIM unlock US Cellular Moto G 2015 XT1548

Warning: This guide requires unlocking the bootloader, which will void your warranty.
Confirmed working for T-Mobile/MetroPCS. I welcome other XT1548 users to try this process for themselves.
1) Unlock the bootloader, install a recovery, and root the device. Follow instructions in this forum already as other people have made much higher quality guides than I could make.
2) Perform the tutorial located here to flash XT1540 modem and associated files: http://forum.xda-developers.com/2015-moto-g/help/tuto-fastboot-erase-signal-t3451362
3) Flash the latest version of CM13: https://download.cyanogenmod.org/?device=osprey
4) Install GApps/all other necessary apps for CM13
5) Dial *#*#4636#*#* to switch to LTE/GSM (auto) mode
6) Enter the correct APN for your carrier
7) Enjoy your GSM unlocked device!
Few remarks: it may not be needed to flash the XT1540 files. It seems like the block is only on US Cellular's software. But I'm leaving the step added in as it is what worked for me. Any suggestions for polishing the tutorial would be appreciated.
A few photos: (note that this was done on an active SIM, but without paid for service. 611 works correctly, as does the T-Mobile/MetroPCS portal).
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dwegiel said:
Warning: This guide requires unlocking the bootloader, which will void your warranty.
Confirmed working for T-Mobile/MetroPCS. I welcome other XT1548 users to try this process for themselves.
1) Unlock the bootloader, install a recovery, and root the device. Follow instructions in this forum already as other people have made much higher quality guides than I could make.
2) Perform the tutorial located here to flash XT1540 modem and associated files: http://forum.xda-developers.com/2015-moto-g/help/tuto-fastboot-erase-signal-t3451362
3) Flash the latest version of CM13: https://download.cyanogenmod.org/?device=osprey
4) Install GApps/all other necessary apps for CM13
5) Dial *#*#4636#*#* to switch to LTE/GSM (auto) mode
6) Enter the correct APN for your carrier
7) Enjoy your GSM unlocked device!
Few remarks: it may not be needed to flash the XT1540 files. It seems like the block is only on US Cellular's software. But I'm leaving the step added in as it is what worked for me. Any suggestions for polishing the tutorial would be appreciated.
A few photos: (note that this was done on an active SIM, but without paid for service. 611 works correctly, as does the T-Mobile/MetroPCS portal).
Click to expand...
Click to collapse
You did a whole ton of extra work. The USC Motorola phones are factory unlocked so any rom (even stock) would work out of the box. It's only the Sprint/Virgin Moto phones are are locked.

purplefruity said:
You did a whole ton of extra work. The USC Motorola phones are factory unlocked so any rom (even stock) would work out of the box. It's only the Sprint/Virgin Moto phones are are locked.
Click to expand...
Click to collapse
Wrong, by default the XT1548 only gets LTE signal. Even setting/forcing GSM on in the testing menu does not allow it to get service for talk/text on T-Mobile.

dwegiel said:
Wrong, by default the XT1548 only gets LTE signal. Even setting/forcing GSM on in the testing menu does not allow it to get service for talk/text on T-Mobile.
Click to expand...
Click to collapse
Thats weird. The best I can get for GSM on my Sprint variant is International sim. For the international sim, it works without any issues on stock rom. USC might be a little different.

Is there any type of updated guide for this because I have the XT1548 and I have had no luck with unlocking it. Any tips would be extremely useful.

P20 Pro GPU Turbo update - VoLTE for all supported carriers

What I did?
1. Unlocked bootloader
2. Installed TWRP
3. Installed Magisk using TWRP
4. Using ES explorer edited vendor/build.config to enable VOLTE for Airtel
5. Using Settings Editor app enabled 4G only mode.
6. Hide magisk for bank apps.
7. Using HuRUpdater method updated to latest firmware with GPU turbo

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hi,
where did you get last firmware, funkyhuawei ?? i see there is C782 available, are those fully compatible with debranded european devices ??
thanks

Dougi said:
hi,
where did you get last firmware, funkyhuawei ?? i see there is C782 available, are those fully compatible with debranded european devices ??
thanks
Click to expand...
Click to collapse
150 fw was released for 636 for more than a week already.
152 was just released for 432 recently.

Hey, thanks for quick reply, can you hep me with something, don't want to brick my device.
i'm on huawei P20 PRO, bought it unbranded, i'm in France, i unlocked the bootloader and rooted the stock ROM ( magisk ) with custom TWRP , did not do anything else at this day. ( pic attched )
i'm on 131C432, i want to manually update the update to "152"C432 with GPU turbo ( pic attached from app Huawei Firmware Finder ), i saw full firmaware was available ( see pic attached )
My question is, can update with HuRUpdater method following the steps from the HuRUpdater Thread, without debranding, rebranding etc......... it won't relock my bootloader right , i'll just place his recovery into .zip to keep custom TWRP, flash full 152C432, then root.
thanks for lighting me the situation i'm into

Yes you can flash it via hurupdater no need to relock BL or rebrand or rebrand. If you want to keep twrp put the twrp.img (renamed to recovery.img) in the same folder with the fw and hurupdater.zip

hi there, can you elaborate on this?
4. Using ES explorer edited vendor/build.config to enable VOLTE for Airtel
5. Using Settings Editor app enabled 4G only mode.
will this work on other networks outside India? I´m in Vodafone Portugal, and all set with my sim but there is no way to get volte to work.

kinder__bueno said:
hi there, can you elaborate on this?
4. Using ES explorer edited vendor/build.config to enable VOLTE for Airtel
5. Using Settings Editor app enabled 4G only mode.
will this work on other networks outside India? I´m in Vodafone Portugal, and all set with my sim but there is no way to get volte to work.
Click to expand...
Click to collapse
If you have rooted your phone successfully, Install ES explorer, In the menu allow root explorer.
THEN
GO TO DEVICE, SELECT SYSTEM-> VENDOR-> BUILD.PROP
IN BULID.PROP YOU FIND THE LINE COMMAND
ro.config.hw_volte_on=true
ADD THIS COMMAND LINE AFTER THE LINE
ro.config.hw_volte_dyn=false
it should be like this ro.config.hw_volte_on=true
ro.config.hw_volte_dyn=false
AFTER ADDING SAVE AND REBOOT YOUR PHONE.

Dougi said:
hi,
where did you get last firmware, funkyhuawei ?? i see there is C782 available, are those fully compatible with debranded european devices ??
thanks
Click to expand...
Click to collapse
I got the firmware from here.
http://pro-teammt.ru/firmware-database/?firmware_model=Clt-l29c636&firmware_page=0
By pressing filelist you will see three links, Download all and rename as per HuRUpdater method requirements and you are ready to go.

manovee said:
If you have rooted your phone successfully, Install ES explorer, In the menu allow root explorer.
THEN
GO TO DEVICE, SELECT SYSTEM-> VENDOR-> BUILD.PROP
IN BULID.PROP YOU FIND THE LINE COMMAND
ro.config.hw_volte_on=true
ADD THIS COMMAND LINE AFTER THE LINE
ro.config.hw_volte_dyn=false
it should be like this ro.config.hw_volte_on=true
ro.config.hw_volte_dyn=false
AFTER ADDING SAVE AND REBOOT YOUR PHONE.
Click to expand...
Click to collapse
I´ve done that on an previous firmware version and it didn´t work. No VoLTE, not even the option to change on the call settings. Are you sure it´s working on all suported carriers?
Anyone else outside India tested this?

kinder__bueno said:
I´ve done that on an previous firmware version and it didn´t work. No VoLTE, not even the option to change on the call settings. Are you sure it´s working on all suported carriers?
Anyone else outside India tested this?
Click to expand...
Click to collapse
It wont work that simple indeed
Been doing that trick since i bought the phone. And, no, my volte is not working
Smartfren telecom, Indonesia

otonieru said:
It wont work that simple indeed
Been doing that trick since i bought the phone. And, no, my volte is not working
Smartfren telecom, Indonesia
Click to expand...
Click to collapse
Technically If your bands are built into the modem and restricted by region model it can be enables. For me, I have bought a Singapore Model and in India the device is not showing enabling VoLTE for carrier Airtel although it shows for a 4G only carrier JIO. I used this mod to get VoLTE on Airtel too.
So your issue might be the LTE band used for VoLTE itself not supported by the modem.

manovee said:
I got the firmware from here.
http://pro-teammt.ru/firmware-database/?firmware_model=Clt-l29c636&firmware_page=0
By pressing filelist you will see three links, Download all and rename as per HuRUpdater method requirements and you are ready to go.
Click to expand...
Click to collapse
Will work for me, my phone is from Hong Kong?

gd6noob said:
Will work for me, my phone is from Hong Kong?
Click to expand...
Click to collapse
Use current version to search in the website.. You can find yours at about screen. Mine is Clt-l29c636. you can use your model to find your firmware

manovee said:
Technically If your bands are built into the modem and restricted by region model it can be enables. For me, I have bought a Singapore Model and in India the device is not showing enabling VoLTE for carrier Airtel although it shows for a 4G only carrier JIO. I used this mod to get VoLTE on Airtel too.
So your issue might be the LTE band used for VoLTE itself not supported by the modem.
Click to expand...
Click to collapse
thing is,
my carrier band is exactly the same as JIO
so it definitely not about the band
do you set manual APN for your VoLTE btw ?
i tried setting up IMS apn, but everytime i save it, it disappear from APN list

otonieru said:
thing is,
my carrier band is exactly the same as JIO
so it definitely not about the band
do you set manual APN for your VoLTE btw ?
i tried setting up IMS apn, but everytime i save it, it disappear from APN list
Click to expand...
Click to collapse
I havent set Manual APN I left whatever carrier set. Giving false to the volte_dyn setting will give you an option to enable volte in network settings. Thats what I did.
Above that I am unsure what is happening in your part of the region.

Question [SOLVED] M127F stuck with Russia (SER) CSC after flashing Brazil ROM and later trying to flash back to XEO

So I wanted to try something so I flashed the Brazil ROM. tried to flash back to XEO but now in the settings it says "SER/SER,SER/XEO" and when resetting installs Russian bloatware. What can I do to restore the XEO ROM?

Dis you do a factory reset?

physwizz said:
Dis you do a factory reset?
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yeah i did but its still stuck with ser csc

Flash stock ROM

@Malware said:
Flash stock ROM
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did that many times but it still didn't change but for now im okay with it just disabled updates so i wont get stuck with russia rom without an option of downgrading via alliance shield x and it works fine

hxudsh said:
did that many times but it still didn't change but for now im okay with it just disabled updates so i wont get stuck with russia rom without an option of downgrading via alliance shield x and it works fine
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That is weird. Full Brazilian stock firmware set? AP, BL, CP and CSC_OMC_ODM? Once the device is restarted after flashing get into the recovery straight away (hold power + volume up with the USB cable connected to PC). Don't let it boot Android! In the recovery do Factory Reset, format the data partition (if it's possible in the stock recovery, I don't remember) and wipe all the caches and only then boot the system. Also try removing the SIM card before flashing and also do the first boot of Android without SIM (although it shouldn't matter but who knows).

uluruman said:
That is weird. Full Brazilian stock firmware set? AP, BL, CP and CSC_OMC_ODM? Once the device is restarted after flashing get into the recovery straight away (hold power + volume up with the USB cable connected to PC). Don't let it boot Android! In the recovery do Factory Reset, format the data partition (if it's possible in the stock recovery, I don't remember) and wipe all the caches and only then boot the system. Also try removing the SIM card before flashing and also do the first boot of Android without SIM (although it shouldn't matter but who knows).
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yeah it was the full set but it also didnt fix it but im fine with it unless as my sim card and mobile data will stop working but currently even volte is working so im fine with it

hxudsh said:
yeah it was the full set but it also didnt fix it but im fine with it unless as my sim card and mobile data will stop working but currently even volte is working so im fine with it
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I remember that when I did disassembling of the Prism partition of different country versions I've discovered that most of the European firmwares contain the full set of Russian bloatware. In fact, all the firmwares with the size of more than 5 GB are all nearly identical in regards of bloatware included. So I can suggest you to temporarily install a Nepal or Papua New Guinea firmware, do the factory reset with it, go fully through the setup process, and then try again to flash the Brazilian version. It may help. Or you can stay with the Nepalese firmware, it's quite minimalistic and includes Samsung Pay (if you need it).

uluruman said:
I remember that when I did disassembling of the Prism partition of different country versions I've discovered that most of the European firmwares contain the full set of Russian bloatware. In fact, all the firmwares with the size of more than 5 GB are all nearly identical in regards of bloatware included. So I can suggest you to temporarily install a Nepal or Papua New Guinea firmware, do the factory reset with it, go fully through the setup process, and then try again to flash the Brazilian version. It may help. Or you can stay with the Nepalese firmware, it's quite minimalistic and includes Samsung Pay (if you need it).
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Click to collapse
ok but the m127f model doesnt have a nepal or papua new guinea firmware

Try Bolivia: https://samfw.com/firmware/SM-M127F/BVO
The general rule of thumb is the smaller firmware is the less bloated it is. Also prefer firmware for the poor and commercially unpromising countries, the so-called "3rd world".

sorry for reviving this thread but is there a way to get lte back? all i want is "good" mobile data and lte works good on my huawei, so can i get it back on my samsung without somehow changing the csc? (the carrier i use is Play in Poland)

after around 8 months, today i finally got my lte back via the samfw frp tool
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