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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"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
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)...

No Network Issue after DC Phoenix Factory image flash

Hi All,
I bricked my phone pretty badly couple of days ago. It was not booting and was not allowing me to go to the recovery and also fastboot was not flashing anything at all. Even unlock bootloader command was failing.
So, as a last resort, I flashed my NXT - L29 with the factory image of AL10 from DC-Unlocker Phoenix software. Also after that I restored the IMEI and all other stuff.
Problem is that after doing that my phone is not picking up any network. It was showing sim locked initially which I unlocked using the codes generated by DC-Unlocker and the phone now is not showing locked to carrier but still it is not picking up any of the service provider's network. I tried Airtel and Jio (I am in India). Strange thing is that it is not even listing any networks when I go and search for them manually in network options. Not even in 2G or 3G specific modes.
To overcome this issue, I debranded my phone to C636 and C185 as well but the result is the same. No network.
I suspected that somehow the bands got changed from TD LTE to FDD LTE which is causing the issue as in India all 4G rpoviders use only TD LTE right now.
Now my question is that is there any way to get back to the TD LTE and should this effect 2G and 3G coverage as well.
Any help will be hugely appreciated as the phone is right now a brick even if it boots up and functioning fine. :crying::crying:

I don't know much about dc unlocker but do they have l29 factory image to flash?
What about the baseband in about phone is it showing correct and ur imei?

gm007 said:
I don't know much about dc unlocker but do they have l29 factory image to flash?
What about the baseband in about phone is it showing correct and ur imei?
Click to expand...
Click to collapse
They do not have L29 factory image.
However, I already restored the imei and unlocked everything.
Sent from my A0001 using Tapatalk

What was ur original region l29c...?
Did you use srk tools to debrand?
Check this link for how to debrand
Think the oem info is what is causing the problem.

sozofriend1234 said:
Hi All,
I bricked my phone pretty badly couple of days ago. It was not booting and was not allowing me to go to the recovery and also fastboot was not flashing anything at all. Even unlock bootloader command was failing.
So, as a last resort, I flashed my NXT - L29 with the factory image of AL10 from DC-Unlocker Phoenix software. Also after that I restored the IMEI and all other stuff.
Problem is that after doing that my phone is not picking up any network. It was showing sim locked initially which I unlocked using the codes generated by DC-Unlocker and the phone now is not showing locked to carrier but still it is not picking up any of the service provider's network. I tried Airtel and Jio (I am in India). Strange thing is that it is not even listing any networks when I go and search for them manually in network options. Not even in 2G or 3G specific modes.
To overcome this issue, I debranded my phone to C636 and C185 as well but the result is the same. No network.
I suspected that somehow the bands got changed from TD LTE to FDD LTE which is causing the issue as in India all 4G rpoviders use only TD LTE right now.
Now my question is that is there any way to get back to the TD LTE and should this effect 2G and 3G coverage as well.
Any help will be hugely appreciated as the phone is right now a brick even if it boots up and functioning fine. :crying::crying:
Click to expand...
Click to collapse
I have same problem as your but with P9 after using DC unlocker and phonex also HCU Clint to roster IMEI ,now no signal !
if you come with solution pls let me know .

copysat said:
I have same problem as your but with P9 after using DC unlocker and phonex also HCU Clint to roster IMEI ,now no signal !
if you come with solution pls let me know .
Click to expand...
Click to collapse
me too,
with my mate 8 from China NXT-ALC10, after a brick to change it in NXT-L29 and restore with
DC-unlocker, DC Phoenix and Hcu-client
the two SIM don't work are blind!!
There is an issue in to the software recovery DC ecc ecc or BASEBAND is bricked??
is possible a file check with radio information or backup??
thank You for answer
p.s. this link is good??
hxxp://recomhub.com/blog/how-to-fix-huawei-mate-8-not-registered-on-network-and-repair-null-imei-number/

mcanton said:
me too,
with my mate 8 from China NXT-ALC10, after a brick to change it in NXT-L29 and restore with
DC-unlocker, DC Phoenix and Hcu-client
the two SIM don't work are blind!!
There is an issue in to the software recovery DC ecc ecc or BASEBAND is bricked??
is possible a file check with radio information or backup??
thank You for answer
p.s. this link is good??
hxxp://recomhub.com/blog/how-to-fix-huawei-mate-8-not-registered-on-network-and-repair-null-imei-number/
Click to expand...
Click to collapse
The code in the link does not work on mate 8. May be they have just assumed that it should work and it might be a generic code. I found that link when I was looking for solutions and many more like this but they do not work. The codes mentioned on the most of the tutorials are not working on mate 8. I think USSD codes are partially disabled on our phone.

gm007 said:
What was ur original region l29c...?
Did you use srk tools to debrand?
Check this link for how to debrand
Think the oem info is what is causing the problem.
Click to expand...
Click to collapse
Did the steps again. Debranded to C185320 but still the same. No network. :crying::crying::crying:

sozofriend1234 said:
Did the steps again. Debranded to C185320 but still the same. No network. :crying::crying::crying:
Click to expand...
Click to collapse
Try to dload c185b200 cause b320 is not officially released.

gm007 said:
Try to dload c185b200 cause b320 is not officially released.
Click to expand...
Click to collapse
Tried with c636b200 but the same. No signal.
Sent from my A0001 using Tapatalk

dont waste your time guys, dbrand or flashing original firmware will not solve the problem i ve tried all possible ways to make it work with no hope.
The best way to contact DC-unlock to find solutions.

copysat said:
dont waste your time guys, dbrand or flashing original firmware will not solve the problem i ve tried all possible ways to make it work with no hope.
The best way to contact DC-unlock to find solutions.
Click to expand...
Click to collapse
Contacted the tech support of DC as well. As per them this is a limitation of firmware flashed. Only solution as per them is to flash L29 factory firmware which they do not have. Or contact huawei.

the link below is a fake?
hXXp://recomhub.com/blog/how-to-fix-huawei-mate-8-not-registered-on-network-and-repair-null-imei-number/
Thank You

mcanton said:
the link below is a fake?
hXXp://recomhub.com/blog/how-to-fix-huawei-mate-8-not-registered-on-network-and-repair-null-imei-number/
Thank You
Click to expand...
Click to collapse
Yes mate.
Sent from my A0001 using Tapatalk

I have the same problem but the funny thing that I can send sms very normally but can't make phone calls .....!!!!
Any Help will be most appreciated .

Have the same problem with my al10 and a g8 rio-l01
I repaired the al10 like you and flashed with the stock china rom (ota update work) but no service, the working code in al10 is *#*#6130#*#* not 4636 (you will se the phone is in VoLTE mode) but you can't do nothing, there is no service (i think we need to flash the radio)
For the g8 its an mea version repaired by the same way but this one got more problem it boot but with factory run mode and no service too
Hope we will find a solution (asked dc unlock team and im waiting)

makabress said:
Have the same problem with my al10 and a g8 rio-l01
I repaired the al10 like you and flashed with the stock china rom (ota update work) but no service, the working code in al10 is *#*#6130#*#* not 4636 (you will se the phone is in VoLTE mode) but you can't do nothing, there is no service (i think we need to flash the radio)
For the g8 its an mea version repaired by the same way but this one got more problem it boot but with factory run mode and no service too
Hope we will find a solution (asked dc unlock team and im waiting)
Click to expand...
Click to collapse
Update: edited the g8 country to: normal and i got signial and the correct network but i cant make a call do the factory mode
Also trayed with the mate 8 vendor: hw region: normal / and hw,cn and all,cn but no result stuck with no service

makabress said:
Update: edited the g8 country to: normal and i got signial and the correct network but i cant make a call do the factory mode
Also trayed with the mate 8 vendor: hw region: normal / and hw,cn and all,cn but no result stuck with no service
Click to expand...
Click to collapse
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This is what I see. No network type or LTE mentioned. Mine was L29 and is on L29 ROM right now.
Sent from my A0001 using Tapatalk

sozofriend1234 said:
This is what I see. No network type or LTE mentioned. Mine was L29 and is on L29 ROM right now.
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
Debrand to C636B200 and reboot and use this. Your network problems will be solved.

bluheart said:
Debrand to C636B200 and reboot and use this. Your network problems will be solved.
Click to expand...
Click to collapse
(and use this...) use what??

Changing CSC without root

Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.

the_OZONE said:
Is it possible to change CSC without root? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.
Click to expand...
Click to collapse
Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.
Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.

cantenna said:
Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.
Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.
Click to expand...
Click to collapse
I wanted to use a CSC that allows AT&T wifi calling and voLTE. This thread https://forum.xda-developers.com/ga...ility-flashable-csc-selection-v1-0-0-t3605264 shows that it is possible to flash USA Multi-CSC using TWRP and root, which includes AT&T. So is it possible to have this CSC on the G955F while being unrooted? If it requires me to root and then unroot in order to change the CSC, I would be okay with that too as long as the CSC stays.
Based on what you said, I'm assuming the answer is no because the AT&T variant is the snapdragon variant, so I'm guessing that means the CSC wouldn't be supported in exynos unless flashed via root and then remaining rooted. Correct?

if you have Exynos phone you got root as an option
Sent from my SM-G955F using Tapatalk

cantenna said:
if you have Exynos phone you got root as an option
Click to expand...
Click to collapse
Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.

the_OZONE said:
Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.
Click to expand...
Click to collapse
i have the 955FD with an ATT CSC and Wifi calling isn't working and i can't visually tell if VoLTE is working. next step is to get an ATT imei assigned to my number to see if that fixes it. bottom line, changing to ATT CSC is not guaranteed to get the aforementioned services working on your 955F.

Root it , fix it and get voLTE then use hideroot to hide root on that banking apps .

Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar

ngominh said:
Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
Click to expand...
Click to collapse
What do you mean with "Factory Imei"? It's a menu or something? In phone dialer that code doesn't work...

Same question here what does "Factory Imei"? It's a menu or something?
Also in step 3 assuming you have to put the CSC of the new CSC area you want. Also usually you flash CSC and not HOME_CSC. In this case it is reverse, any reason why ?

i have same objective as yours, i have SM-G9550 which is hongkong variant (non-root) and it is snap with 6gb pf ram and 128gb of rom. I want to change CSC to Thailand (THL) to use VOLTE and VOWIFI. But problem is Thai variant is EXYNOS paired with 4gb of ram and 64gb of rom. So is there anyway to work this without root as i need to use Knox and samsung pay so root will deatroy it correct?

ngominh said:
Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
Click to expand...
Click to collapse
Don't talk RUBBISH!!!
This is NOT possible without root!

henklbr said:
Don't talk RUBBISH!!!
This is NOT possible without root!
Click to expand...
Click to collapse
No it's all possible check out the carrier switch thread in the s8 forums
Sent from my SM-G955U using XDA-Developers Legacy app

You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
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Sent from my SM-G955W using XDA-Developers Legacy app

Cyclops1055 said:
You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
Click to expand...
Click to collapse
This code doesn't work on my Exynos, Can you help me please I want to change it.

the_OZONE said:
Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.
Click to expand...
Click to collapse
You can change the CSC region successfully using @ngominh's method.
But you have to find "The Combination" file for your phone to do it and that
is usually a "Paid" firmware which is different than your normal stock firmware!
You find that and you can change the CSC successfully!

To change csc if you are on multi firmware
Type *#272*IMEI#
It will show list of available csc
Then choose the csc you want
It will factory reset device
Back up all files and try

yash92duster said:
To change csc if you are on multi firmware
Type *#272*IMEI#
It will show list of available csc
Then choose the csc you want
It will factory reset device
Back up all files and try
Click to expand...
Click to collapse
I'm on multi csc but this code does nothing on my Exynos S8+.

samcex said:
I'm on multi csc but this code does nothing on my Exynos S8+.
Click to expand...
Click to collapse
Type *#272*IMEI#
in IMEI type your imei code 12445765xxxxxx934934
it works fine for me
it will show a list and after selecting any csc it will factory reset
i tried and only gave a way to change csc
you try again
i dont know what you typed

yash92duster said:
Type *#272*IMEI#
in IMEI type your imei code 12445765xxxxxx934934
it works fine for me
it will show a list and after selecting any csc it will factory reset
i tried and only gave a way to change csc
you try again
i dont know what you typed
Click to expand...
Click to collapse
First of all how can I confirm I'm on multi csc, would you help me troubleshoot this ?

Question Oneplus 9 T mobile running c.6x firmware dual sim bug solution finding

I got my tmo converted to eu running c.47 no dual sim bug after update to c.6x get dual sim bug and mobile data wont work unless magisk module same with global firmware or indian same problem after update to c.6x there is dual sim bug no mobile data work everything else work fine can anyone help me with problem without root

What you are asking can only be fixed oneplus. Another way is like you are asking someone to help fix your car without opening the hood.

MrSteelX said:
What you are asking can only be fixed oneplus. Another way is like you are asking someone to help fix your car without opening the hood.
Click to expand...
Click to collapse
Its not only my problem its a common problem whoever converts op9 tmo to global got hard bricked and after op9 pro india msm have this problem

rizzmughal said:
Its not only my problem its a common problem whoever converts op9 tmo to global got hard bricked and after op9 pro india msm have this problem
Click to expand...
Click to collapse
If you root problem can be fixed in 30 seconds

MrSteelX said:
If you root problem can be fixed in 30 seconds
Click to expand...
Click to collapse
Thats the problem dont want to root cant use couple of apps after that

rizzmughal said:
Thats the problem dont want to root cant use couple of apps after that
Click to expand...
Click to collapse
Out of curiosity why are you converting to global if you don't intend to root it?

Kievanightwing said:
Out of curiosity why are you converting to global if you don't intend to root it?
Click to expand...
Click to collapse
It aint necessary to root to stay on global and get updates i have used op8 tmo before converted to global used to update everytime was no issue at all

MrSteelX said:
If you root problem can be fixed in 30 seconds
Click to expand...
Click to collapse
After tmo official a12 ota update it should be easy to fix this issue i used the tmo 12 c.20 too but felt a few problems in that touch response was bad then global and also phone heats and lags in games

rizzmughal said:
It aint necessary to root to stay on global and get updates i have used op8 tmo before converted to global used to update everytime was no issue at all
Click to expand...
Click to collapse
Ah, alright then.
You'll need to use this: https://forum.xda-developers.com/t/...-for-indian-variant-flashing-as-well.4454357/
to get your phone back to the TMO version because the the Indian version not only changes certain hidden settings but also runs on a different SOC (870 for India vs 888 for TMO) which are probably contributing to your issue.

Kievanightwing said:
Ah, alright then.
You'll need to use this: https://forum.xda-developers.com/t/...-for-indian-variant-flashing-as-well.4454357/
to get your phone back to the TMO version because the the Indian version not only changes certain hidden settings but also runs on a different SOC (870 for India vs 888 for TMO) which are probably contributing to your issue.
Click to expand...
Click to collapse
I have tried it always get param preload error

Kievanightwing said:
Ah, alright then.
You'll need to use this: https://forum.xda-developers.com/t/...-for-indian-variant-flashing-as-well.4454357/
to get your phone back to the TMO version because the the Indian version not only changes certain hidden settings but also runs on a different SOC (870 for India vs 888 for TMO) which are probably contributing to your issue.
Click to expand...
Click to collapse
I used tmo india msm from there after that conversion to global after c.6x update still the same problem even i have mam with that couple of times there should be someone who can use tmo c.20 ota to fix this dual sim bug data wont work issue

rizzmughal said:
I have tried it always get param preload error
Click to expand...
Click to collapse
Param preload error is a user input error.
Did you make sure the dropdown to the right of the Enum button has O2 selected?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
If you're still getting that error here are some other things you can try:

Kievanightwing said:
Param preload error is a user input error.
Did you make sure the dropdown to the right of the Enum button has O2 selected?
View attachment 5725635
If you're still getting that error here are some other things you can try:
Click to expand...
Click to collapse
Yes tried each n every way o2 india sha check uncheck lite firehorse check always get param preload error device does not match in that msm

rizzmughal said:
Yes tried each n every way o2 india sha check uncheck lite firehorse check always get param preload error device does not match in that msm
Click to expand...
Click to collapse
Alright, here is another MSM tool that's modified directly to force flash TMO on phones that think they're the India model. Give it a shot:
3.55 GB file on MEGA
mega.nz

Kievanightwing said:
Alright, here is another MSM tool that's modified directly to force flash TMO on phones that think they're the India model. Give it a shot:
3.55 GB file on MEGA
mega.nz
Click to expand...
Click to collapse
I have flashed this one on me after that converted to global with fastboot enhance i still get this no data issue after c.6x update

As u can see i m on c.47 eu firmware same goes with c.48 global data is working perfectly no bug after i update to c.6x my data wont work there sim 2 in sim menu question is what is in c 6x updates which is not in c.48 that makes dual sim bug

rizzmughal said:
I have flashed this one on me after that converted to global with fastboot enhance i still get this no data issue after c.6x update
Click to expand...
Click to collapse
rizzmughal said:
As u can see i m on c.47 eu firmware same goes with c.48 global data is working perfectly no bug after i update to c.6x my data wont work there sim 2 in sim menu question is what is in c 6x updates which is not in c.48 that makes dual sim bug
Click to expand...
Click to collapse
Oh shoot, I was under the impression you couldn't get back to a working version after running into the bug. My bad. Unfortunately fixing the mobile data on c.6x is outside of my wheelhouse. I think only Oneplus can fix that issue on unrooted devices. Best of luck to you.

really dumb test. after updating to c6x with the sim bug, have you tried pulling out sim card and putting it back in?

MrSteelX said:
really dumb test. after updating to c6x with the sim bug, have you tried pulling out sim card and putting it back in?
Click to expand...
Click to collapse
Yea did that but nothing works

Weird I have a TMO OnePlus 9 I converted yesterday that only has no sim after reboot but after a little bit maybe like a minute or two I have data. I'm rooted but I haven't used the Dual Sim Module at all. I'm also on OOS13 but on the update before this it was working still

Question Is there a way to change CSC on my USA model?

Hi! I have an A53. Having waited for any exploit root wise for the USA models, I've started looking at other alternative ways to get there.
I know the biggest hang up is that on USA models the "Unlock OEM Bootloader" option is not present in the Developer Options.
With there being /some/ exploits and things you can do to the device prior to having root access, I was wondering if there is any feasible way to load something like a UK firmware on to my device to then provide me with the "Unlock OEM Bootloader" option-
I attempted changing the CSC with the SamFW tool 4.0, and though it claimed to have changed the CSC to BTE (From XAA) it still did not let me load up a BTE firmware in ODIN.
Is there any way whatsoever to cheat this mess of unrootability?
Please let me know any ideas you have!
Thank you!

cascaraband said:
Hi! I have an A53. Having waited for any exploit root wise for the USA models, I've started looking at other alternative ways to get there.
I know the biggest hang up is that on USA models the "Unlock OEM Bootloader" option is not present in the Developer Options.
With there being /some/ exploits and things you can do to the device prior to having root access, I was wondering if there is any feasible way to load something like a UK firmware on to my device to then provide me with the "Unlock OEM Bootloader" option-
I attempted changing the CSC with the SamFW tool 4.0, and though it claimed to have changed the CSC to BTE (From XAA) it still did not let me load up a BTE firmware in ODIN.
Is there any way whatsoever to cheat this mess of unrootability?
Please let me know any ideas you have!
Thank you!
Click to expand...
Click to collapse
There are no solutions currently
Unless the device model contains an MTK processor

if your device is SM-A536U with SamFW tool 4.0 you can only change your original CSC with one of the OYN multi CSC firmware ( stored in prism or and optic firmware )
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"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
BTE : UK (BT) is part of A536B firmware

yakapa40 said:
if your device is SM-A536U with SamFW tool 4.0 you can only change your original CSC with one of the OYN multi CSC firmware ( stored in prism or and optic firmware )
View attachment 5832469
BTE : UK (BT) is part of A536B firmware
Click to expand...
Click to collapse
How about the SM-S536DL; Straight Talk/Tracfone variant? I've SIM-unlocked it but would like to flash U radio bands. Not getting bands 41 or 71 so no 5G on T-Mobile. There used to be a time where you could enter codes in the dialer to access hidden menus to select radio bands, but long patched I guess.

@mewcatchew​you can try to change your CSC to TFO ( with T mobile préconfiguration )
regards

yakapa40 said:
@mewcatchew​you can try to change your CSC to TFO ( with T mobile préconfiguration )
View attachment 5835083
View attachment 5835097
regards
Click to expand...
Click to collapse
Thank you!
Do I just flash the CSC?
Simple Mobile is owned by Verizon now (acquired all of Tracfone) but hopefully still using T-Mobile.
EDIT: I flashed the CSC only with SamFW Tool 4.0, still says TFN, no 5G. In fact the CSC says TFN in the file, they all do whether I choose CSC "TFA", "TFV', "TFO" etc. Its all Tracfone so...?
Edit # 3: I just ended up flashing all 4 TFO files. Looks like I have 5G now. Who knew.

i don't speak about flashing CSC but only changing CSC with this tool
Galaxy S918B S23 OXM multi CSC S23 OWO multi CSC
extracted from original firmware : multi CSC OXM BTB | UK (BT , BT OnePhone , BTop Roaming) BTE | UK (BT) PKD | PAKISTAN multi CSC OWO GLO | GUATEMALA
forum.xda-developers.com

There's also this new thing you can try to change CSC.
https://www.reddit.com/r/samsung/comments/10zdhv1
Does not require root, and no idea when Samsung will patch it.

PlutoDelic said:
There's also this new thing you can try to change CSC.
https://www.reddit.com/r/samsung/comments/10zdhv1
Does not require root, and no idea when Samsung will patch it.
Click to expand...
Click to collapse
I checked it out earlier; I found options to enable 5G bands 41 & 71, also LTE band 71. But I never seen anything other than LTE bands 2, 4, 12, & 66 actually being used. After reboot, the bands selected weren't selected anymore as far as I can recall. Also, changing the CSC doesn't actually seem to change it. It's an interesting tool, but I don't think it actually does anything except making you think you did. This was with my SIM unlocked Straight Talk A53, using Mint Mobile SIM card (T-Mobile). Maybe I wasn't doing it correctly, but it was fun being able to access these hidden menus I haven't been able to for eons.
What I did do yesterday, was flash TFO firmware with Odin (my A53 is TFN) and even though my CSC still says "TFN" It says 5G on my signal bar now - I never got 5G before that. I have no idea what band, probably just trickery on Mints part. I've only ever seen LTE bands 2, 4, 12, & 66 in use in the service menu.

yakapa40 said:
i don't speak about flashing CSC but only changing CSC with this tool
Galaxy S918B S23 OXM multi CSC S23 OWO multi CSC
extracted from original firmware : multi CSC OXM BTB | UK (BT , BT OnePhone , BTop Roaming) BTE | UK (BT) PKD | PAKISTAN multi CSC OWO GLO | GUATEMALA
forum.xda-developers.com
Click to expand...
Click to collapse
I tried that yesterday, didn't work. See pics below.

but after i can see changing to TFO OK

yakapa40 said:
but after i can see changing to TFO OK
View attachment 5836777
Click to expand...
Click to collapse
look at 2nd picture. TFN, no change.

mewcatchew said:
Thank you!
Do I just flash the CSC?
Simple Mobile is owned by Verizon now (acquired all of Tracfone) but hopefully still using T-Mobile.
EDIT: I flashed the CSC only with SamFW Tool 4.0, still says TFN, no 5G. In fact the CSC says TFN in the file, they all do whether I choose CSC "TFA", "TFV', "TFO" etc. Its all Tracfone so...?
Edit # 3: I just ended up flashing all 4 TFO files. Looks like I have 5G now. Who knew.
View attachment 5835811
Click to expand...
Click to collapse
it's not connected to 5G, if the 5G icon is not in Bold is not connected to 5G, 5G icon not in Bold, only means that your carrier is transmitting a 5G signal that your phone can detect. I have that problem. I have the A536U1/DS, my carrier model is A536E/DS, so I have the 5G icon but not in bold, so I can't connect to my carrier 5G, and apparently the A536U1/DS cannot be converted to A536E/DS.
You can download NetMonster APP and you will see that it's not connected to 5G..