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[Q] chat-ril and AT comand reference for MDM 6600 (Motorola Atrix 4G modem)

Hi,
can anyone tell me if you can use /system/bin/chat-ril to communicate with Motorola Atrix 4G modem?. The modem is MDM 6600 (I presume Qualcomm manufacturer). Manual page (or source code) would be great.
I need to send AT command to change frequency band form USA to EURO.
Also, If anyone has or can get the AT command reference for the MDM 6600 modem used in Motorola Atrix 4G?
This is a sample form logcat -b radio while setting USA radio band:
Code:
[5387]> QUERY_AVAILABLE_BAND_MODE
onReq: reqCode = 66, dataLen = 0
Ch4 > 5908AT+GRDE=10012,0,0,0
Read Ch4 << 5908+GRDE=10012,0,0,8,8001E80
[5387]< QUERY_AVAILABLE_BAND_MODE {2, 2}
[5388]> SET_BAND_MODE 2
onReq: reqCode = 65, dataLen = 4
Ch4 > 5909AT+SRDE=10012,0,0,8,0000A
Read Ch4 << 5909+SRDE=OK
[5388]< SET_BAND_MODE
What the hell is AT+GRDE ???

hi
i am also at the same point. i am in europe and selected usa gsm band. i am not able to use gsm. have you found something or any progress?

No, I haven't.
But, I this situation if you would have the AT&T SIM and account, you wouldn't be able to use your cell phone anywhere but in USA. The roaming wouldn't work.
This is just wrong!

gogy22 said:
No, I haven't.
But, I this situation if you would have the AT&T SIM and account, you wouldn't be able to use your cell phone anywhere but in USA. The roaming wouldn't work.
This is just wrong!
Click to expand...
Click to collapse
so there should be a solution.
how to update atrix firmware?

Same problem here...
We could try an "AT&F" to restore factory settings.
Not sure about the chat-ril syntax. Found the chat man page. Tried:
$ chat-ril '' 'AT&F'
[2] - Stopper (tty output) chat-ril "" AT
But does not seem to work. Is this the correct syntax ?

Cheshire Cat said:
Same problem here...
We could try an "AT&F" to restore factory settings.
Not sure about the chat-ril syntax. Found the chat man page. Tried:
$ chat-ril '' 'AT&F'
[2] - Stopper (tty output) chat-ril "" AT
But does not seem to work. Is this the correct syntax ?
Click to expand...
Click to collapse
Where did you find chat man page? Please share!

gogy22 said:
Where did you find chat man page? Please share!
Click to expand...
Click to collapse
If you are on UNIX, just type "man chat" on the console.
Otherwise search "chat man page" on the Internet (sorry, I'm not yet allowed to post links here ).

I've have managed to get GSM. I can make and receive call and 2G works, but not 3G. I don't know why... yet.
So, this is what I have done:
1. Boot Atrix holding the Volume Down key (Volume Up key is select so don't press it yet).
2. Select BP HW Bypass BP Only by pressing Volume Up key. There will be 5 new devices that Windows detects.
3. You will need MDM6600 Baseband drivers. The drivers I found are for Windows 7 x64 and they are not signed. So I needed to boot Windows (F8 key) with option "Disabe driver signature enforcement"
4. Then, you will need Qualcomm QPST or new QXDM. I used QPST 2.7 build 355.
5. Open QPST RF NV Item Manager. You need to select COM port assigned to MDM6600 Baseband Diagnostic Interface
I would suggest to be very careful with this tool since you can screw your phone beyond imagination. Just don't use any command that writes to phone.
6. select File -> Read form phone.
7. you need to find NV_BAND_PREF_I item. There should be 2 parameters NAM = 0 and BandPref = 0. At least I had those.
Just to remind, you do this at your own risk. My techincal skills are good, but not that good. I realy don't know what all the parametars mean. I did this and got GSM only. So think twice before you do this.
I would like to ask any of the developers to help on this matter. Now, if you feel lucky proceed with next step.
8. Before doing this read this whole thread! In BandPref enter 65535 or in hex FFFF and press button above "Write NV". The value FFFF should mean "Automatic band selection".
9. reboot the phone by removing the battery (don't know any other way)
The phone should register to network upon bootup.

Cheshire Cat said:
If you are on UNIX, just type "man chat" on the console.
Otherwise search "chat man page" on the Internet (sorry, I'm not yet allowed to post links here ).
Click to expand...
Click to collapse
I've gave up trying since if I manage to send AT commands to modem, I still don't know the AT command to send.

gogy22 said:
I've have managed to get GSM. I can make and receive call and 2G works, but not 3G. I don't know why... yet.
So, this is what I have done:
1. Boot Atrix holding the Volume Down key (Volume Up key is select so don't press it yet).
2. Select BP HW Bypass BP Only by pressing Volume Up key. There will be 5 new devices that Windows detects.
3. You will need Motorola USB drivers. The drivers I found are for Windows 7 x64 and they are not signed. So I needed to boot Windows (F8 key) with option "Disabe driver signature enforcement"
4. Then, you will need Qualcomm QPST or new QXDM. I used QPST 2.7 build 355.
5. Open QPST RF NV Item Manager. You need to select COM port assigned to MDM6600 Baseband Diagnostic Interface
I would suggest to be very careful with this tool since you can screw your phone beyond imagination. Just don't use any command that writes to phone.
6. select File -> Read form phone.
7. you need to find NV_BAND_PREF_I item. There should be 2 parameters NAM = 0 and BandPref = 0. At least I had those.
Just to remind, you do this at your own risk. My techincal skills are good, but not that good. I realy don't know what all the parametars mean. I did this and got GSM only. So think twice before you do this.
I would like to ask any of the developers to help on this matter. Now, if you feel lucky proceed with next step.
8. In BandPref enter 65535 or in hex FFFF and press button above "Write NV". The value FFFF should mean "Automatic band selection"
9. reboot the phone by removing the battery (don't know any other way)
The phone should register to network upon bootup.
Click to expand...
Click to collapse
Great job ! Have you tried forcing "CDMA only" ?
Same setup here, but can't get my Win7 systems (both 64 and 32 bit) to install the MSM6600 device drivers. Tried all Motorola drivers from 4.7 to 4.9 but none of the 5 devices are recognized.
Which drivers did you use ?

RESOLVED
Resolved flashing leaked firmware 1.5.2:
http://forum.xda-developers.com/showthread.php?t=991072
WARNING: Flashing 1.5.2 will restore the device to factory settings. BACKUP !

Cheshire Cat said:
Great job ! Have you tried forcing "CDMA only" ?
Same setup here, but can't get my Win7 systems (both 64 and 32 bit) to install the MSM6600 device drivers. Tried all Motorola drivers from 4.7 to 4.9 but none of the 5 devices are recognized.
Which drivers did you use ?
Click to expand...
Click to collapse
If you are still interested I'll try to find driver pack I've installed...
Cheshire Cat said:
Resolved flashing leaked firmware 1.5.2:
http://forum.xda-developers.com/showthread.php?t=991072
WARNING: Flashing 1.5.2 will restore the device to factory settings. BACKUP !
Click to expand...
Click to collapse
Regarding the firmware, couple of questions.
1. Are you in Europe? Does the 3G (UMTS/HSUPA/HSDPA) connection works?
I'm asking this because I have realized that the WCDMA I Band (2100 MHz) is not enabled, so the modem when searches the band automatically will not even include 2100 Mhz band.
2. When you uploaded the new firmware can you still boot Atrix to HW BP Bypass mode?
3. Can you get root with the new firmware?

gogy22 said:
If you are still interested I'll try to find driver pack I've installed...
Click to expand...
Click to collapse
Yes. Please let me know at least the driver version.
gogy22 said:
Regarding the firmware, couple of questions.
1. Are you in Europe? Does the 3G (UMTS/HSUPA/HSDPA) connection works?
I'm asking this because I have realized that the WCDMA I Band (2100 MHz) is not enabled, so the modem when searches the band automatically will not even include 2100 Mhz band.
Click to expand...
Click to collapse
I am in Europe.
- Dial: *#*#4636#*#*"
- Select: "Phone info"
- Select "GSM/CDMA (auto PRL)"
With this setting, my phone is currently displaying:
- Network type = UMTS
- Notification bar shows "H+"
- A few speed tests reach rx speed of about 4 Mbps, so it is definitely working
gogy22 said:
2. When you uploaded the new firmware can you still boot Atrix to HW BP Bypass mode?
Click to expand...
Click to collapse
Yes.
gogy22 said:
3. Can you get root with the new firmware?
Click to expand...
Click to collapse
Haven't tried yet.

Cheshire Cat said:
Yes. Please let me know at least the driver version.
Click to expand...
Click to collapse
Sorry, my bed. Actually, you need MDM6600 driver . Here you are. I have only x64. If you need x86 google it, I found these that way. Or tell me, I try to find where I got these.
Cheshire Cat said:
I am in Europe.
- Dial: *#*#4636#*#*"
- Select: "Phone info"
- Select "GSM/CDMA (auto PRL)"
Click to expand...
Click to collapse
This is the first thing I've tried, no luck. Which country are you in? Does your operator use WCDMA 2100 frequency or other?
Cheshire Cat said:
With this setting, my phone is currently displaying:
- Network type = UMTS
- Notification bar shows "H+"
- A few speed tests reach rx speed of about 4 Mbps, so it is definitely working
Click to expand...
Click to collapse
If its not a problem for you when you install the drivers can you send me your QCN file so I could compare with my values. You can use NV Item Manager to read from phone and write to file (sorry if I'm playing smart but I don't know you level of experience).

If anyone is interested, I managed to flash Atrix with OLYFR_U4_1.5.2_SIGNED SBF image. After the flash I have UMTS/HSDPA connectivity and the cell phone stayed unlocked.
I reviewed the modem configuration file .QCN files for both configurations. I seems the only difference is NV_BAND_PREF_I parameter.
With USA band selected it is:
NAM = 0 and BandPref = 0
And with the new flash image is:
NAM = 0 and BandPref = 384 (decimal, or 180 Hex)
( not the FFFF that I have stated before)

Gogy,
glad to know you have your Atrix working again.
Sorry for not getting back to you sooner.
My Atrix is gone. Dismissed. This phone is crawling with bugs and I am really becoming allergic to bugs due to very long daily exposure since I was a child...
Cheers.

Not pleased to hear that. Bugs? What bugs?
I didn't come accross any... yet, and I hope I won't.
Sent from my HTC Desire using XDA App

gogy22 said:
Not pleased to hear that. Bugs? What bugs?
I didn't come accross any... yet, and I hope I won't.
Click to expand...
Click to collapse
Lots of random issues.
Audio glitches, stuttering. Sudden resets when both cores are under stress. Reboot loops. Not powering up even if attached to the charger.Hot device even if apparently idle. Battery from 30% to 0% in 20 minutes. Buggy multimedia subsystem drivers. Cheap and noisy camera sensors.
All of the above also with stock firmware.
May well be hardware related, but really I don't want to find out.
Apart from issues, the user experience is crap: Motoblur lags behind competing products. Contacts images are not synced with Exchange servers. UI widgets are few and poorly designed. Mail and Calendar apps are a pain to use.
Google's crappy/broken/incomplete/poor Android API and the absurd choice of Java as the programming language have their responsibilities. But competing Android products do much better to work around these issues.
You asked me and I am just reporting my personal experience and opinion. YMMV.

motorola atrix 4g - usa band selected, no more euro service
currently living in the uk with an unlocked at&t motorola atrix 4g. accidently selected 'usa band' and have since not been able to locate service for any of the uk / european networks providers (eg, orange, o2, t-mobile) that were previously available.
i'm having a hard time deciphering whether or not this issue has been resolved:
1) has this issue been resolved by anyone as of yet? and if so,
2) can someone please provide clear step-by-step instructions, from start to finish, to demonstrate how to reach this resolution? i'm a bit of a layman
thank you all!

galthouse9 said:
1) has this issue been resolved by anyone as of yet? and if so,
Click to expand...
Click to collapse
Yes.
You just have to flash the non-official firmware 1.5.2 - ... at your own risk.
galthouse9 said:
2) can someone please provide clear step-by-step instructions, from start to finish, to demonstrate how to reach this resolution? i'm a bit of a layman
Click to expand...
Click to collapse
No problem.
This is the thread with the step-by-step instructions:
http://forum.xda-developers.com/showthread.php?t=991072
WARNING: Flashing 1.5.2 will restore the device to factory settings. BACKUP ALL YOUR IMPORTANT DATA !

[HOW TO] Force 3G (WCDMA) use.

There are some roms that does not allow the "3g only" option, especially kitkat-based custom roms. This can make you lose your mind to find a solution or even uninstall the rom, but you can easily solve the problem.
NO ROOT REQUIRED
--------------------------------------------------
1 - Open Dialer
2 - Type *#*#4636#*#*
3 - Open Phone information
4 - Scroll down and find Set preferred network type
5 - Choose WCDMA only
6 - Return to home and you are good to go!
--------------------------------------------------
You need to set everytime you boot your phone!

gersbandeira said:
There are some roms that does not allow the "3g only" option, especially kitkat-based custom roms. This can make you lose your mind to find a solution or even uninstall the rom, but you can easily solve the problem.
NO ROOT REQUIRED
--------------------------------------------------
1 - Open Dialer
2 - Type *#*#4636#*#*
3 - Open Phone information
4 - Scroll down and find Set preferred network type
5 - Choose WCDMA only
6 - Return to home and you are good to go!
--------------------------------------------------
You need to set everytime you boot your phone!
Click to expand...
Click to collapse
Hi. When I use this code on my Asus Zenfone 4 (A450CG) the Phone Information section is not visible. Is this normal?

force 3g
This does not work on LG G3 Lollipop 5.0 Software Version V20h-234-10. Is there any way to force 3g on Lollipop?

I found a solution how to force 3G on Lollipop 5.0
Ive downloaded Toggle Network Type 5.0 apk.
It works for me

Change 2G to 3G [common issue]

Hey most of user posting ..
This issue in most of android devices
Issue:-
u have 3G data pack and data connection showing 2G instead of 3G
Solution :-
1.Download mobileuncle tool from playstore.
2.Open it.
3.go to engineermode
4.click on phone information
5.now last step switch gsm only,gsm auto,etc to wcdma only ...
Its done .. Enjoy 3G
This guide also work for 4G
just switch 2G/3G to LTE
enjoy 4G..
Presss thanks if i help u

EMINEM786 said:
Hey most of user posting ..
This issue in most of android devices
Issue:-
u have 3G data pack and data connection showing 2G instead of 3G
Solution :-
1.Download mobileuncle tool from playstore.
2.Open it.
3.go to engineermode
4.click on phone information
5.now last step switch gsm only,gsm auto,etc to wcdma only ...
Its done .. Enjoy 3G
This guide also work for 4G
just switch 2G/3G to LTE
enjoy 4G..
Presss thanks if i help u
Click to expand...
Click to collapse
Same thing can be done by typing *#*#4636#*#* in Dialer and changing the data connection type under phone information. You don't need an app for it.
僕のINO2から送られてきた

Yes it will .also works.. Bt not on every android devices

EMINEM786 said:
Yes it will .also works.. Bt not on every android devices
Click to expand...
Click to collapse
4636 is a universal code across all Android devices. The only difference is if it uses "*#*#4636#*#*" or "*#4636#*". This code should work across most Android phones, even if the ROM developers added in their own codes, like Sony which uses "*#*#7378423#*#*" for their Service Menu.
僕のINO2から送られてきた

popthosegaskets said:
4636 is a universal code across all Android devices. The only difference is if it uses "*#*#4636#*#*" or "*#4636#*". This code should work across most Android phones, even if the ROM developers added in their own codes, like Sony which uses "*#*#7378723#*#*" for their Service Menu.
僕のINO2から送られてきた
Click to expand...
Click to collapse
Kk

G930FD - Dual SIM - VoLTE Support

Hi All,
I've seen many threads asking this question but doesn't answer it to my situation. I'm using this phone in Sri Lanka and my carrier recently launched VoLTE. I called up my carrier and got them to activate VoLTE for my SIM and so far I've not been able to make use of this.
The other threads talks about a setting either under Phone -> Settings or Settings -> Mobile Networks which is not there in my case.
Does this mean that the ROM/CSC that I have doesn't support VoLTE (I'm using the original ROM)?
Regards,
Asanka

In my S7 Dual Sim there is a Quick Toggle for VoLTE; Its there where you can turn on/off wifi, mobile data, bluetooth etc

VoLTE & VoWiFi working
Let's revive this thread.
I have a Galaxy S7 Duos (G930FD) which originally came with Kenya (AFR) firmware. After reading several threads, I replaced the firmware, using Odin, with the Indian (INS), but VoLTE still didn't show up. After verifing if the provider has enabled VoLTE on the SIM card in a Huawei P Smart an everything was functional (VoLTE and VoWiFi), making sure that the SIM card is in slot 1, I decided to re-write the Romanian open firmware (ROM).
And surprise ... Wi-Fi calling (under Connections) and 4G call (under Connections >> Mobile Networks ) are active and working.

Dear Nica,
I've been dying to get my S7 duos to work with volte and wifi calling features.
I've downloaded and installed over 20 different firmware versions and am unable to get it to work.
I can't locate Romanian firmware for 930fd model and was hoping that you can point me right direction please.
Would you please be able to help me?
Many thanks
Michal.

hewloau said:
I can't locate Romanian firmware for 930fd model and was hoping that you can point me right direction please.
Would you please be able to help me?
Click to expand...
Click to collapse
Michal, the G930F firmware works absolutely the same, you can flash it without reservations.
Here is the link for the latest Romanian firmware: https://www.sammobile.com/samsung/galaxy-s7/firmware/SM-G930F/ROM/download/G930FXXS6ESI4/295333/

Working on SM-G930FD with Mint Mobile USA
Hi there,
I thought that I would share my findings. I got volte working on G930FD. The setting comes up under Connections --> Mobile Networks --> VoLTE calls. I have tested it with calls and LTE Discovery app to make sure that I am not dropping back down to 3g/H+/etc... The calls are so much better for me. I am hard of hearing, so it really helped me. I will list how I did it below.
1. Download this firmware. https://www.sammobile.com/samsung/ga...S8ETC3/327944/
2. Use Odin v3.14.4 to flash BL, AP, CP, CSC ( I used CSC not HOME CSC)
3. Boot phone and enable developer mode (not sure if necessary, but this is the way I did it)
4. Reboot to download mode and flash TWRP (uncheck auto reboot)
5. Immediately after flash, reboot to recovery (Power, Volume down, Home to reboot, then Power, Volume up, Home to enter TWRP)
6. Swipe to allow modifications
7. Wipe--> Advanced Wipe --> Select Data --> Repair or Change File System --> Change File System --> EXT2 --> go back --> and then EXT 4 --> back all the way to main screen.
8. Install --> latest version of Magisk
9. Install --> CSCSelection_V3.0.0.zip https://forum.xda-developers.com/s7-...on-30-t3392957
10. Aroma --> Select XXA (Multi USA) --> Select XAA (Unbranded)
11. Reboot and wait to boot (Takes a few minutes)
12. Check in Connections --> Mobile Networks --> VoLTE Calls
That's it. Good luck!!
Oh yeah, Wifi calling is in the dialer app under settings, but I have had no luck with it, even though Mint Mobile supports it.

[Snapdragon] Carrier Aggregation for Europe LTE bands

Galaxy S7/S7 edge is probably the latest Snapdragon "S" phone for international market in terms of radio capabilities. I would say it is even more functional than exynos S7.
Next Snapdaragon S8/S9 was built for US carriers and LTE bands.
Here is what was discovered:
Of course it supports all Europe LTE bands (1/3/7/8/20/38)
Moreover it supports a lot of CA combinations that is not enabled in EFS
As I understand phone scheme It supports noncontinuous 3xCA only if third carrier is "low frequency" like B20 or B8 because this antenna is connected to second transceiver.
Here is the list of combinations tested and fully working in Russia (from CA_tested.cmd)
Code:
3A2A-7A2-20A2 6
3A2-7A2A-20A2 6
3A2-7A2-20A2A 6
3A2A-7C2 6
3A2-7C2A 6
3A2A-7A2-7A2 6
3A2-7A2A-7A2 6
7C2A-20A2 6
7C2-20A2A 6
1A2A-7C2 6
1A2-7C2A 6
3A2A-20A2-38A2 6
3A2-20A2A-38A2 6
7A2-20A2A-38A2 6
1A2A-3A2-20A2 6
1A2-3A2A-20A2 6
1A2-3A2-20A2A 6
1A2A-7A2-20A2 6
1A2-7A2A-20A2 6
1A2-7A2-20A2A 6
Number of combos: 20
Max streams per combo: 6
Here is a simple instruction how to enable combinations listed above:
Enable Qualcomm diag port in *#0808# service menu (DM+MODEM+ADB)
Install Samsung drivers and find out the number of diag COM port in Windows Device Manager
Run the script CA_teste.cmd from attachment
Enter the COM port number when asked
The script result must look like this:
Code:
00000000: 4b 0b 24 00 78 02 00 00 0e 00 02 00 ca 70 c7 12 *K.$.x........p..*
00000010: 7e *~ *
If you got another one just reconnect the cable or reboot the phone and rerun the script.
Reboot the phone
Some more combinations a very likely supported, but not tested.
Code:
3A2A-7A2-20A2 6
3A2-7A2A-20A2 6
3A2-7A2-20A2A 6
3A2A-7C2 6
3A2-7C2A 6
3A2A-7A2-7A2 6
3A2-7A2A-7A2 6
7C2A-20A2 6
7C2-20A2A 6
1A2A-7C2 6
1A2-7C2A 6
3A2A-20A2-38A2 6
3A2-20A2A-38A2 6
7A2-20A2A-38A2 6
1A2A-3A2-20A2 6
1A2-3A2A-20A2 6
1A2-3A2-20A2A 6
1A2A-7A2-20A2 6
1A2-7A2A-20A2 6
1A2-7A2-20A2A 6
3C2A-7A2 6
3C2-7A2A 6
3A2A-3A2-7A2 6
3A2-3A2-7A2A 6
Number of combos: 24
Max streams per combo: 6
It would be nice you can test them if your local carriers support such combinations.
Run CA_not_tested.cmd instead of CA_tested.cmd to enable extended list of combinations.
Credits:
vvevvevve from 4pda.ru forum for most research and consultations
qtools developers for the qcommand.exe used in script

It supports 1AA-3A/1A-3AA at least as I thought.

Are the combinations CA_3A-7A and CA_7A-3A enabled in the EFS by default?

bla679832164 said:
Are the combinations CA_3A-7A and CA_7A-3A enabled in the EFS by default?
Click to expand...
Click to collapse
Definitely not
Here is the list of CAs on T version
Code:
Input file size: 300 bytes
Format verson: 0
Number of descriptors: 13
4A4A-12A2 6
4A4-12A2A 6
2A4A-12A2 6
2A4-12A2A 6
2A2A-4A2-12A2 6
2A2-4A2A-12A2 6
2A2-4A2-12A2A 6
12A2A-4A2-4A2 6
12A2-4A2A-4A2 6
Number of combos: 9
Max streams per combo: 6
A,P,U modems have disabled CA
I have nos seen V EFS backup, but pretty sure there is no 3+7 combinations

abyss7 said:
Definitely not
Here is the list of CAs on T version
Code:
Input file size: 300 bytes
Format verson: 0
Number of descriptors: 13
4A4A-12A2 6
4A4-12A2A 6
2A4A-12A2 6
2A4-12A2A 6
2A2A-4A2-12A2 6
2A2-4A2A-12A2 6
2A2-4A2-12A2A 6
12A2A-4A2-4A2 6
12A2-4A2A-4A2 6
Number of combos: 9
Max streams per combo: 6
A,P,U modems have disabled CA
I have nos seen V EFS backup, but pretty sure there is no 3+7 combinations
Click to expand...
Click to collapse
Thank you for the list!:good: I know for a fact that my mobile network provider has implemented CA_3A-7A, so if you find a way to add that combination into your cmd script I could test whether it works or not.

bla678932164 said:
Thank you for the list!:good: I know for a fact that my mobile network provider has implemented CA_3A-7A, so if you find a way to add that combination into your cmd script I could test whether it works or not.
Click to expand...
Click to collapse
It is already there. Check the second line in the list in start message

Will this survive factory reset?

turbozapekanka said:
Will this survive factory reset?
Click to expand...
Click to collapse
Yes, it will
It won't survive only full firmware reflash especially for another carrier.

Should I use CA+1.cmd or CA.cmd for Russia?
Is there a way to save and revert to original settings in case something goes wrong?
Can you please share the link to the original 4pda thread?

turbozapekanka said:
Should I use CA+1.cmd or CA.cmd for Russia?
Is there a way to save and revert to original settings in case something goes wrong?
Can you please share the link to the original 4pda thread?
Click to expand...
Click to collapse
1. It depends on your region and carrier, but nothing bad happened if you set more than used by carrier.
2. Yes, xQCN backup with QPST
3. Start from here http://4pda.ru/forum/index.php?act=findpost&pid=77244363&anchor=Spoil-77244363-5

1. Will this work without root?
2. I have a G930U with modem G930UUESACSI1 and Oreo, will it work on that one?
I have tried doing the steps listed above, but CA is still not working for me...

bla678932164 said:
1. Will this work without root?
2. I have a G930U with modem G930UUESACSI1 and Oreo, will it work on that one?
I have tried doing the steps listed above, but CA is still not working for me...
Click to expand...
Click to collapse
1. Yes, it will in general. You just need to enable diag port.
2. It won't work with U modem, you need V or T modem. I recommend T.
If I'm not mistaken U do not have enabled *#0808# code by default. You have to make it work by temporary flashing engineering kernel and replacing keystrings.dat or use other carrier firmware or any other way.
But it is out of this topic.

Tested and added the new combination 7CA-20A/7C-20AA
Also changed the OP and attachment
Now
CA_tested.cmd is for who wants just get working phone
CA_not_tested.cmd is for who wants to "See how deep the rabbit hole goes" or just help with testing.

Updated the OP with 1A-7C (of course it also supports 1A-7A)

Hi, i made a bit of a mess. I tried the script on a US Unlocked S10+ used in Bulgaria trying to enable CA but now the network broke down. I no longer have any network connectivity. How can i revert it back to stock? And is there a way to make it work on the phone? Thanks

The problem just got more complicated. I tried to reflash my original Firmware with CSC file and start from scratch but it didn't recover the network. Then tried to flash a T-Mobile branded Firmware, it didn't do anything and just reflash back to the original unlocked U1. It seems that the script changed something above the firmware level.

CuBG said:
Hi, i made a bit of a mess. I tried the script on a US Unlocked S10+ used in Bulgaria trying to enable CA but now the network broke down. I no longer have any network connectivity. How can i revert it back to stock? And is there a way to make it work on the phone? Thanks
Click to expand...
Click to collapse
It was not good decision to apply this script to US S10. As said in OP S7 was the last "universal" device.
The right way is restore EFS Backup, but I think you don't have it
- Firstly, you can delete "file" /nv/item_files/rfnv/00028874 in EFS via QPST (EFS Explorer). It make your network just work, but without any carrier aggregation.
- Ask some another owner of such phone give you original 00028874 and write it to your phone.
Unfortunately I have only from US Note 10.

abyss7 said:
It was not good decision to apply this script to US S10. As said in OP S7 was the last "universal" device.
The right way is restore EFS Backup, but I think you don't have it
- Firstly, you can delete "file" /nv/item_files/rfnv/00028874 in EFS via QPST (EFS Explorer). It make your network just work, but without any carrier aggregation.
- Ask some another owner of such phone give you original 00028874 and write it to your phone.
Unfortunately I have only from US Note 10.
Click to expand...
Click to collapse
Hi, thanks for the info. After spending the last couple of days educating myself on the matter i finally know what's going on. Can you give the 00028874 file from the US Note 10? I'd like to test it out since it's from a phone with the same SoC, same modem and from the same region FOR the same region. For now i can't find an original backup of that file from the same phone as mine, so the US Note 10 is the second best option to try Thanks again!

CuBG said:
Hi, thanks for the info. After spending the last couple of days educating myself on the matter i finally know what's going on. Can you give the 00028874 file from the US Note 10? I'd like to test it out since it's from a phone with the same SoC, same modem and from the same region FOR the same region. For now i can't find an original backup of that file from the same phone as mine, so the US Note 10 is the second best option to try Thanks again!
Click to expand...
Click to collapse
For example Hong Kong S10/S10+ are very different from Hong Kong Note 10/10+. The same SoC. The same Region.
You can try it on your own risk. It is in attachment.

abyss7 said:
For example Hong Kong S10/S10+ are very different from Hong Kong Note 10/10+. The same SoC. The same Region.
You can try it on your own risk. It is in attachment.
Click to expand...
Click to collapse
It didn't work I'll leave it at that. The phone is going back to Samsung for the upcoming S20U, so i don't care if the CA works or not when i fly back to the US. Thanks anyway :good:
When i get the S20U thought and bring it back to Bulgaria, then i am gonna do a FEW backups of these files and hope to find a solution on the CA in Europe