Develop Bugs

[GUIDE] Flash T-Mobile Galaxy Tab so that it makes calls with any sim (EDGE only)

DISCLAIMER: I AM NOT RESPONSIBLE FOR YOUR ACTIONS. IF YOU BRICK OR DAMAGE YOUR DEVICE IN SOME WAY, IT IS YOUR RESPONSIBILITY. THERE ARE SOME STEPS THAT MIGHT NOT BE LEGAL IN SOME COUNTRIES (CHANGING IMEI NUMBERS), AND I WILL NOT BE HELD RESPONSIBLE FOR THAT EITHER. EVERYTHING YOU DO WITH YOUR DEVICE IS YOUR OWN RESPONSIBILITY AND IF YOU FOLLOW ALL THESE STEPS YOU ARE AGREEING TO THAT. THIS TUTORIAL IS DONE FOR EDUCATIONAL PURPOSES.
Thanks to clubtech, rotohammer, koush, ayman07 and everyone in xda that has worked hard to make this possible. I did not come up with any of this, I only gathered it all from different sources and smashed it all together in an easy-to-read guide. Credit is due to all of those listed above, if I missed anyone please do let me know and I'll gladly add you here.
You will need
- P1000XWJJ4 firmware (pass: samfirmware.com)
- P1000XXJK5 firmware (pass: samfirmware.com)
- Odin 1.3
- Koush's zImage for T-Mobile Galaxy Tab
- flash_image
- I900AOJP3.bin Modem from HERE
1) Put you tab into download mode (Turn it off, when it's off, Press VolDown+Power until you see a yellow android and it says downloading...) (WARNING: All your data will be lost in the next step! Everything, INCLUDING the internal memory! Make sure to back everything up to your computer!)
2) Use Odin: Flash P1000XWJJ4 (PDA button) with P1_add_hidden.pit and make sure "Re-partition" is SELECTED, press Start and wait for it to finish. The device will reboot and it will turn on again, probably in russian.
3) Turn it off and put it on download mode again.
4) Use Odin: Press the reset button, then make sure "Re-partition" is UNSELECTED and there's NO PIT file, then flash P1000XXJK5 under "PDA".
5) The device will reboot with the latest euro firmware in english. The modem will probably be undetected, the device will be working kinda crazy (It might be slow and whenever you use something that uses the vibrator it'll get worse, the vibrator won't probably work, don't worry about this, it will be fixed in the next few steps)
6) Make sure you have flash_image and the tmobile_zImage in hand and issue these commands:
Code:
adb push flash_image /data/local/bin/flash_image
adb push tmobile_zImage /sdcard/
adb shell
su (make sure to select "Allow" when the Superuser dialog pops up on the tab)
chmod 755 /data/local/bin/flash_image
/data/local/bin/flash_image boot /sdcard/tmobile_zImage
sync
exit
7) Now, the kernel should be flashed, a reboot should fix all the weirdness. However, instead of rebooting, turn it off, and put it on download mode again (VolDown+Power)
8) Use Odin: Press reset on Odin, make sure "Re-partition" is UNSELECTED, and on the Phone button, flash the modem I900AOJP3.bin.
11) Wait for it to reboot. At this point, the tab should work fine, and the modem should be detected by the system. However, you won't be able to make calls or use the internet because T-Mobile is blocking data. Now, we need to change the IMEI number (READ DISCLAIMER ABOVE!)
12) Now, we need to backup all the contents in the /efs folder, that way, the IMEI will be corrupted, we want this to happen because T-Mobile is blocking the IMEIs on all T-Mo Galaxy Tabs so that data doesn't work unless you have the right plan/contract (BAD MOVE T-MO! WE DIDN'T EXPECT THAT FROM YOU, AT&T MAYBE, BUT NOT YOU!)
13) Backup the /efs folder (Notice: you must have busybox installed, get busybox installer from the market)
Code:
adb shell
su
busybox tar zcvf /sdcard/efs-backup.tar.gz /efs
busybox cat /dev/block/stl3 > /sdcard/efs_dev-block-stl3.img
exit
back to the shell in your computer, now use these commands to put those files in your computer, and save them somewhere safe.
Code:
adb pull /sdcard/efs-backup.tar.gz .
adb pull /sdcard/efs_dev-block-stl3.img .
14) Delete all contents from /efs and reboot. Easiest way to do it is using root explorer from the market. DO NOT DELETE THE ACTUAL FOLDER, JUST IT'S CONTENTS.
15) Done, you will be able to browse the web, send/receive SMS, and send/receive voice calls. The only issue at this moment is that it will only work on EDGE, 3G is not possible, YET.
Enjoy.

This method was posted earlier and is much easier i'd say. Thanks.

LordLugard said:
This method was posted earlier and is much easier i'd say. Thanks.
Click to expand...
Click to collapse
Where exactly? Please link me to the post that makes your T-Mo Tab make calls, using the Euro firmware and vibrator works and the tab doesn't go crazy.
As I said, all the guides I found were missing a few pieces. One was for AT&T Tabs, but I didn't find one that was for T-Mo tabs in a single piece, everything was scattered all around.
Sent from my mobile

velazcod said:
Where exactly? Please link me to the post that makes your T-Mo Tab make calls, using the Euro firmware and vibrator works and the tab doesn't go crazy.
As I said, all the guides I found were missing a few pieces. One was for AT&T Tabs, but I didn't find one that was for T-Mo tabs in a single piece, everything was scattered all around.
Sent from my mobile
Click to expand...
Click to collapse
The exact link i posted is how i got my Tmo Tab flashed to Euro firmware with calls and 2G data. Much easier steps. Not berating your method.
http://forum.xda-developers.com/showthread.php?t=886714
EDIT** Didn't realize i didn't post link in first reply.

LordLugard said:
The exact link i posted is how i got my Tmo Tab flashed to Euro firmware with calls and 2G data. Much easier steps. Not berating your method.
http://forum.xda-developers.com/showthread.php?t=886714
EDIT** Didn't realize i didn't post link in first reply.
Click to expand...
Click to collapse
Oh ok, didn't notice that also works for T-Mo tabs. Oh well.
Thanks.

Thanks for posting this guide. I followed the instructions and still cannot make phone calls. It seems to dial but the T-Mobile automated voice operator says "The phone you are using does not allow outgoing calls."
I removed all /efs files and rebooted, then verified that the IMEI was corrupt afterwards.
Any ideas? Maybe T-Mobile is blocking the corrupt IMEI number now?
Thanks in advance!

Are you able to use the market ok with your imei corrupted?

droooid said:
Thanks for posting this guide. I followed the instructions and still cannot make phone calls. It seems to dial but the T-Mobile automated voice operator says "The phone you are using does not allow outgoing calls."
I removed all /efs files and rebooted, then verified that the IMEI was corrupt afterwards.
Any ideas? Maybe T-Mobile is blocking the corrupt IMEI number now?
Thanks in advance!
Click to expand...
Click to collapse
I don't think so. Are you using a SIM card with a plan that has phone calls or are you using the same SIM card? Your Tab has a webConnect plan that does not allow phone calls, so you need to put in a SIM card that has data and calling plan.
They are blocking the IMEI for data, as far as I know, so if you use your tab to go online (without using Wifi), and it goes to my.t-mobile.com even if you try to go to xda-developers.com then they are blocking it, but in your case, it's just probably the calling plan.
calebchosen said:
Are you able to use the market ok with your imei corrupted?
Click to expand...
Click to collapse
Yes sir, Market works, it even updated itself to the latest version.

T-Mobile usa modem
sorry voice failed 3 times. sorry again will update if i can figure out why I lost voice after getting it to work.
the attached file is the original t-mobile galaxy tab modem. NO VOICE but 3G on EUROFIRMWARE

hi zdentist now m use Tmobile with EURO ver all work fine
but i can get 3G data what can i do Enable 3G service ??
this MODEM.BIN work my Tmobile euro ver?

Why make this so difficult? Just flash modaco's custom rom and kernel for Tab with Odin and its done...

USED TMOBILE TAB WITH EURO VER CALLING WORK FI9 BUT CANT USE INTERNET WITH SIM DATA
AND ALSO CONFORM THAT THIS IS POSSIABLE I USE 3G DATA IN TMOBILE?
m using this tab ver

fahadz said:
USED TMOBILE TAB WITH EURO VER CALLING WORK FI9 BUT CANT USE INTERNET WITH SIM DATA
AND ALSO CONFORM THAT THIS IS POSSIABLE I USE 3G DATA IN TMOBILE?
m using this tab ver
Click to expand...
Click to collapse
Did you get your answer from the modem switcher thread? PM me if you're still stuck.

fahadz said:
hi zdentist now m use Tmobile with EURO ver all work fine
but i can get 3G data what can i do Enable 3G service ??
this MODEM.BIN work my Tmobile euro ver?
Click to expand...
Click to collapse
sorry for the late reply. yes but you won't be able to make voice calls with this modem.bin file only DATA unfortunatley

Steps to recover IMEI using qcn

How does one change the IMEI?
I've tried this without success:
1. Root your device
2. Download and install QSPT and UltraEdit (HxD would also do).
3. Download an IMEI converter.
4. Get hold of a working qcn (I used my own which I know works in my other P2). Open the file by using Ultraedit/HxD and try to locate the IMEI. In my case it often starts with "08 8A...".
5. Use the IMEI converter and input your true IMEI. Memorize the output.
6. Return to the qcn file. Write it over with the IMEI output you got in step 5.
7. Save the file.
8. In a terminal enter:
su
setprop sys.usb.config rndis,diag,adb
9. Restore the qcn file from step 7 by using QSPT. You click on QPST configuration and go to "ports". If your port isn't already visible go to the device manager, look up the Qualcomm Diag port and add it. For me I believe it's COM9. Now you click on "start clients", then "software download". Tick the "Allow phone/file ESN mismatch", locate your saved qcn file and start restoring it.
10. All done. Reboot!
Apparently some XDA members managed to get their signal back once the modem was deleted so I guess somebody should know.
Other methods I've tried include flashing stock MM and installing OTA until you're on S251 as well as restoring an older full TWRP backup from when your signal used to work. Needless to say, they didn't work.

This procedure worked for me. Lenovo K6 Power with Qualcomm proc.
Successfully I found other users qcn file and wrote my IMEI in it.
Signal is back but diag port disappeared and I can't turn it on again.

WhatsApp me or call me 8436243173

WHERE CAN I GET THIS QNCN ? I'm confused

I had same problem, here are my steps with qcn backup file from working P2. My IMEIs stays right. Sorry for my english and here is my link and read next threads from that forum.
https://forum.xda-developers.com/showpost.php?p=73444145&postcount=70

mL-7 said:
This procedure worked for me. Lenovo K6 Power with Qualcomm proc.
Successfully I found other users qcn file and wrote my IMEI in it.
Signal is back but diag port disappeared and I can't turn it on again.
Click to expand...
Click to collapse
Have K6 power with IMEI turned 0 after fastboot erase modemst1 and 2. Could you please detail the steps to restore IMEI?

Add L24 LTE bands to BND-L22 or BND-AL10?

Just got the phone bootloader unlocked (thanks to Wh1t3Rose for the guide) and now need to add the LTE bands from L24. Settings > About says the model is BND-AL10, however, HCU client says it's BND-L22 so a little confused. Can't find any fw in firmware finder for L22 so assuming AL10 is the right model.
Can I now safely use HuRUpdater to flash BND-L24C567CUSTC567D1B344 (8.0.0.344) FullOTA-MF on this device? Or I am missing some steps like rooting / installing TWRP etc.?
Another question - what TWRP to use with HuRUpdater? Would the first one from here work for 7x?
Thanks for any comments!

rexian said:
Just got the phone bootloader unlocked (thanks to Wh1t3Rose for the guide) and now need to add the LTE bands from L24. Settings > About says the model is BND-AL10, however, HCU client says it's BND-L22 so a little confused. Can't find any fw in firmware finder for L22 so assuming AL10 is the right model.
Can I now safely use HuRUpdater to flash BND-L24C567CUSTC567D1B344 (8.0.0.344) FullOTA-MF on this device? Or I am missing some steps like rooting / installing TWRP etc.?
Another question - what TWRP to use with HuRUpdater? Would the first one from here work for 7x?
Thanks for any comments!
Click to expand...
Click to collapse
If you need to change model bands , it takes more than that.
If you do like that , the model number doesn't change and modem bands also stay the same. You will need to do what is referred to as "re-brand" which changes the oeminfo file , then flash the l24 full ota.
Changing the oeminfo. Makes bootloader lock again. But the same key is supposed to still work.
It can be easy to make brick during re-brand
. You should Study the bnd-hwota-eng script to understand the process.

mrmazak said:
If you need to change model bands , it takes more than that.
If you do like that , the model number doesn't change and modem bands also stay the same. You will need to do what is referred to as "re-brand" which changes the oeminfo file , then flash the l24 full ota.
Changing the oeminfo. Makes bootloader lock again. But the same key is supposed to still work.
It can be easy to make brick during re-brand
. You should Study the bnd-hwota-eng script to understand the process.
Click to expand...
Click to collapse
Thanks mrmazak. Is this a viable option of getting L24 bands on AL10?

Found the L24 oeminfo here. Is there a way I can backup the oeminfo from my AL10 just in case I brick it
Maybe installing TWRP and taking a full backup is a better idea but can't find a TWRP img for AL10 Naugat :|

rexian said:
Found the L24 oeminfo here. Is there a way I can backup the oeminfo from my AL10 just in case I brick it
Maybe installing TWRP and taking a full backup is a better idea but can't find a TWRP img for AL10 Naugat :|
Click to expand...
Click to collapse
I will look at it tonight when I get home.
I had found good hwota tool with the re-brand script in it. I had to translate from russain and add L24 oeminfo but ithas been used successfully.
I will look at that linked oeminfo and compare to the one I put in the hwota tool.
A search on the 7x main page for "bnd hwota- eng" or similar should show the tool like.
If you don't find Ivan upload again.

mrmazak said:
I will look at it tonight when I get home.
I had found good hwota tool with the re-brand script in it. I had to translate from russain and add L24 oeminfo but ithas been used successfully.
I will look at that linked oeminfo and compare to the one I put in the hwota tool.
A search on the 7x main page for "bnd hwota- eng" or similar should show the tool like.
If you don't find Ivan upload again.
Click to expand...
Click to collapse
Thanks again, mrmazak. I saw your post in the other thread while searching but wasn't sure if there is more up to date information or an alternate tool.
Is it possible to just add certain bands to a model without removing existing bands? The only bands of interest are LTE 12 and 17 that are missing in this. The person doesn't really care about Oreo or Nougat - as long as it works with AT&T

Thanks mrmazak for updating HWTOA. I'll try rebranding AL10 to L24 tomorrow. Don't see a way to just add new bands so rebranding L24 seems to be the only way for now.
BTW, I took a backup of Boot, OEMInfo, System and modem_fw partitions. For some reason backup of Data partition failed after multiple attempts (unable to find partition for path /system and createTarProcess() ended with error 255). Is Data partition important in this case? The phone has no real data or app installed anyway as it's not in use.
Another question - planning to use HWOTA7 since I have Nougat right now but downloaded BND-L24C567CUSTC567D1B344 (8.0.0.344) full OTA - is this ok? I can't find a Nougat version for L24C567.

I flashed from L21C10 to TL10,before that I saved 8 modem files with L21 to him and the emui tweaker from the phone,then I restored it,and I had 4G+,try so.

rexian said:
Thanks mrmazak for updating HWTOA. I'll try rebranding AL10 to L24 tomorrow. Don't see a way to just add new bands so rebranding L24 seems to be the only way for now.
BTW, I took a backup of Boot, OEMInfo, System and modem_fw partitions. For some reason backup of Data partition failed after multiple attempts (unable to find partition for path /system and createTarProcess() ended with error 255). Is Data partition important in this case? The phone has no real data or app installed anyway as it's not in use.
Another question - planning to use HWOTA7 since I have Nougat right now but downloaded BND-L24C567CUSTC567D1B344 (8.0.0.344) full OTA - is this ok? I can't find a Nougat version for L24C567.
Click to expand...
Click to collapse
There is a nougat full it's. It is labeled for Oreo roll-back. But should work for you . It is found as 'bond' intead of 'bnd'. ( Wait, the rebrand script is looking for three files. I will try and adjust the script to not fault out with just two.)
And link is actually in the hwota thread as a downgrade package.
I do reupload most current hwota file yesterday. I found a bug when I did a downgrade. So I proof read through the files again and re-uploaded.
Also added link to bnd-hwota-eng to the guide thread.

Klirensxp said:
I flashed from L21C10 to TL10,before that I saved 8 modem files with L21 to him and the emui tweaker from the phone,then I restored it,and I had 4G+,try so.
Click to expand...
Click to collapse
Did you do this to rebrand the phone to support other LTE bands? Or just to get OTA updates keeping the same radios? Sounds like latter.
I am trying to get the US radio bands on my AL10 by rebranding it to L24.

mrmazak said:
There is a nougat full it's. It is labeled for Oreo roll-back. But should work for you . It is found as 'bond' intead of 'bnd'. ( Wait, the rebrand script is looking for three files. I will try and adjust the script to not fault out with just two.)
And link is actually in the hwota thread as a downgrade package.
I do reupload most current hwota file yesterday. I found a bug when I did a downgrade. So I proof read through the files again and re-uploaded.
Also added link to bnd-hwota-eng to the guide thread.
Click to expand...
Click to collapse
Ok, will wait for the updated script. I downloaded rest of the files.
In the oeminfo folder I see AL10C00 img but not AL10C675. Trying to root the phone to be able to copy custom.bin/oeminfo so that I can go back to stock later. For some reason SuperSU doesn't work... will try Magisk now

rexian said:
Ok, will wait for the updated script. I downloaded rest of the files.
In the oeminfo folder I see AL10C00 img but not AL10C675. Trying to root the phone to be able to copy custom.bin/oeminfo so that I can go back to stock later. For some reason SuperSU doesn't work... will try Magisk now
Click to expand...
Click to collapse
I have been looking at some ways to edit the script to make it automatically adjust if there is only 2 update files. And it will be easier to just manually edit the one script before you run it.
Add a "#" to the front of line 332 of hwota.sh.
"HWOTA_BND\HWOTA7_BND-eng\hwota.sh"
Need to just comment out the line with "$TARGET_UPDATE_DATA"
Code:
echo
echo "Copying recovery files, please be patient and wait...."
$ADB push $RECOVERY $RECOVERY_TMP
$ADB push $RECOVERY2 $RECOVERY2_TMP
$ADB shell "dd if=$RECOVERY_TMP of=/dev/block/bootdevice/by-name/recovery bs=1048576"
$ADB shell "dd if=$RECOVERY2_TMP of=/dev/block/bootdevice/by-name/recovery2 bs=1048576"
$ADB shell "echo --update_package=$TARGET_UPDATE > /cache/recovery/command"
#$ADB shell "echo --update_package=$TARGET_UPDATE_DATA >> /cache/recovery/command"
$ADB shell "echo --update_package=$TARGET_UPDATE_HW >> /cache/recovery/command"
$ADB reboot recovery
$ADB kill-server

mrmazak said:
I have been looking at some ways to edit the script to make it automatically adjust if there is only 2 update files. And it will be easier to just manually edit the one script before you run it.
Add a "#" to the front of line 332 of hwota.sh.
"HWOTA_BND\HWOTA7_BND-eng\hwota.sh"
Need to just comment out the line with "$TARGET_UPDATE_DATA"
Code:
echo
echo "Copying recovery files, please be patient and wait...."
$ADB push $RECOVERY $RECOVERY_TMP
$ADB push $RECOVERY2 $RECOVERY2_TMP
$ADB shell "dd if=$RECOVERY_TMP of=/dev/block/bootdevice/by-name/recovery bs=1048576"
$ADB shell "dd if=$RECOVERY2_TMP of=/dev/block/bootdevice/by-name/recovery2 bs=1048576"
$ADB shell "echo --update_package=$TARGET_UPDATE > /cache/recovery/command"
#$ADB shell "echo --update_package=$TARGET_UPDATE_DATA >> /cache/recovery/command"
$ADB shell "echo --update_package=$TARGET_UPDATE_HW >> /cache/recovery/command"
$ADB reboot recovery
$ADB kill-server
Click to expand...
Click to collapse
Cool, done commenting #332. Also was able to root and make a copy of custom.bin / oeminfo.
Now, going to run the script :fingers-crossed:

Alright, an update - it went through lot of steps as expected (including installing oeminfo and unlocking the bootloader) but ended up with "software update failed" error on the phone. On command prompt here is the last few lines of the log -
Use the volume buttons to select YES and press the power button
...
(bootloader) The device will reboot and do factory reset...
OKAY [ 11.001s]
finished. total time: 11.001s
Wait for the device to boot into TWRP.
Press Enter to continue...
Wait for the files to load. Neither of which you do not need to press !!!.
Copying is in progress ....
[100%] /data/update/HWOTA/update.zip
Copying is in progress ....
adb: error: cannot stat 'D:/UX/HCU-Client/HWOTA7_BND-eng//update/update_data_public.zip': No such file or directory
Copying is in progress ....
adb: error: cannot stat 'D:/UX/HCU-Client/HWOTA7_BND-eng//update/update_all_hw.zip': No such file or directory
Copying recovery files, please be patient and wait....
[100%] /tmp/BND_RECOVERY_NoCheck.img
[100%] /tmp/BND_RECOVERY2_NoCheck.img
35+1 records in
35+1 records out
37109760 bytes (35.4MB) copied, 0.414091 seconds, 85.5MB/s
35+1 records in
35+1 records out
37109760 bytes (35.4MB) copied, 0.508804 seconds, 69.6MB/s
The system update should start automatically.
Press Enter to continue...
Click to expand...
Click to collapse
Error for update_data_public.zip was expected and on close inspection I noticed there was an extra '.' in the name of update_all_hw.zip. It was update_all_hw..zip.
So, fixed it and put the phone in fastboot mode and re-ran update.bat. It installed recovery and asked me to put into TWRP. I tried but it never went to TWRP started installing the previously copied ZIP files. It took a while but after it restarted, it went to straight to Android (YAY!). Went to Settings > About and say the model as BND-L24 and build number System 5.1.0.98(07DV).
So far it seemed everything was fine - then I inserted the FreedomPop SIM (uses AT&T towers), added the fp.com.attz APN and restarted it - AND the same issue, can't see the carriers and 0 bars
The oeminfo was definitely installed as I see a lot more options in "preferred network mode" but selecting Global or LTE or anything else does nothing...
Since I am not able to boot into TWRP, I wonder if that's causing an issue. Every attempt to boot into TWRP goes into a screen showing "installing update" with 5% status. It eventually (after 10 minutes or so) boots into Nougat.

Gave up and started from scratch (after installing TWRP img mount manually) and it completed successfully (with expected error for the missing update_data_public.zip). Build number changed to BND-L24C567B150 so both zips were installed yet the problem remains the same - no cellular connectivity and settings > More > Mobile Network > Carrier remains disabled...

rexian said:
Did you do this to rebrand the phone to support other LTE bands? Or just to get OTA updates keeping the same radios? Sounds like latter.
I am trying to get the US radio bands on my AL10 by rebranding it to L24.
Click to expand...
Click to collapse
It’s just that the L21 is always 4G,and on the TL10 it goes to 3G,I switched from L21 to TL10 because of gestures, now I have 4G+ as well as on L21.

rexian said:
Gave up and started from scratch (after installing TWRP img mount manually) and it completed successfully (with expected error for the missing update_data_public.zip). Build number changed to BND-L24C567B150 so both zips were installed yet the problem remains the same - no cellular connectivity and settings > More > Mobile Network > Carrier remains disabled...
Click to expand...
Click to collapse
Good catch with the renamed file. You did right thing to start over, because that first build number was not correct.
As far as I know this should have changed the radio files (modem).
I will keep looking for other confirmed way to change the selected bands.

mrmazak said:
Good catch with the renamed file. You did right thing to start over, because that first build number was not correct.
As far as I know this should have changed the radio files (modem).
I will keep looking for other confirmed way to change the selected bands.
Click to expand...
Click to collapse
Thanks mrmazak. What could be the reason behind disabled option? Earlier with AL10, I could go inside and see AT&T listed but selecting that would not help as corresponding radios were not enabled in AL10.
Now, even if L24 radios are not properly installed / enabled, I should be able to go inside and see AT&T listed - makes me wonder if all the radios are now disabled.
Is there another way to check what radios are available in a phone by running some app?

rexian said:
Thanks mrmazak. What could be the reason behind disabled option? Earlier with AL10, I could go inside and see AT&T listed but selecting that would not help as corresponding radios were not enabled in AL10.
Now, even if L24 radios are not properly installed / enabled, I should be able to go inside and see AT&T listed - makes me wonder if all the radios are now disabled.
Is there another way to check what radios are available in a phone by running some app?
Click to expand...
Click to collapse
Not sure about other ways to check the bands. There are playstore apps that will show what band you are connected to, but have not seen one that shows which ones you can connect to.
side note::: Funkyhuawei (paid service) says of there rebrand guide, that you must flash the new firmware at least 2 times. So maybe take the flash one more time.
some general questions about your problem.
On about phone screen, what is shown for 'baseband' ?
does the imei # number show?
are you installing sim into slot #1 ? (#2 does not support 4g)
did you verify freedom pop sim is activated? (tested in other device)
edit:
found few posts in some "rebranding" threads, that say what you want to do might not be possible.
They say on the software side it will have drivers for the correct bands. But he hardware may not suppport it.
here:
https://forum.xda-developers.com/showpost.php?p=76462513&postcount=175

mrmazak said:
Not sure about other ways to check the bands. There are playstore apps that will show what band you are connected to, but have not seen one that shows which ones you can connect to.
side note::: Funkyhuawei (paid service) says of there rebrand guide, that you must flash the new firmware at least 2 times. So maybe take the flash one more time.
Click to expand...
Click to collapse
I tried once more tonight but the same result - no service and carrier disabled.
mrmazak said:
some general questions about your problem.
On about phone screen, what is shown for 'baseband' ?
does the imei # number show?
are you installing sim into slot #1 ? (#2 does not support 4g)
did you verify freedom pop sim is activated? (tested in other device)
Click to expand...
Click to collapse
There are 2 long numbers for the baseband - both start with 21C60B. Yes, both IMEIs show and are the same as before.
Yes, I always used the dedicated SIM slot as I have a micro-SD inserted for backup.
mrmazak said:
edit:
found few posts in some "rebranding" threads, that say what you want to do might not be possible.
They say on the software side it will have drivers for the correct bands. But he hardware may not suppport it.
here:
https://forum.xda-developers.com/showpost.php?p=76462513&postcount=175
Click to expand...
Click to collapse
I am inclining towards this as well - possibly missing hardware
Now, how do I get back to AL10C675 (don't see a Nougat option in FW Finder) and original radio? HWOTA doesn't have C675 as option, it has C00. I do have the original custom.bin and oeminfo but how do I create a zip to install with TWRP?

no signal - a2lite 4gb

Hi,
I did something wrong with my A2 Lite, i've updated the Magisk boot file from the Magisk app. Caused my phone to stop booting Android.
So i tried reflashing it with Mi Flash in EDL mode. That worked but i don't have any signal when i put a SIM in.
It shows my provider in settings so it recognizes the SIM but doesn't do anything with it.
Tried 10.0.13.0 manually and via Mi Flash = no signal
Tried 10.0.2.0 via Mi Flash = no signal
Loaded TWRP, switch A/B = no effect
Does anyone have a clue what i can do now?
Looks like the IMEI numbers are 0.

terrorsource said:
Looks like the IMEI numbers are 0.
Click to expand...
Click to collapse
I don't know how you got here, but it looks like some important stuff was overwritten.
The mobile network is probably blocking you due to the invalid IMEI...
This is typically something that is stored only in the phone's flash. I'm not sure you'll be able to recover the phone.

a1291762 said:
I don't know how you got here, but it looks like some important stuff was overwritten.
The mobile network is probably blocking you due to the invalid IMEI...
This is typically something that is stored only in the phone's flash. I'm not sure you'll be able to recover the phone.
Click to expand...
Click to collapse
Is it possible to write back the IMEI's if i have them?

terrorsource said:
Is it possible to write back the IMEI's if i have them?
Click to expand...
Click to collapse
It might be. In theory. You'd need to know the format of whatever was overwritten.

You can't rewrite the IMEI, I've have that issue before and I created a guide on how to fix it
https://forum.xda-developers.com/mi...-to-fix-efs-corruption-sim-card-t3928910/amp/
Enjoy ?
You can download the latest rom and install it (ignore the rom that's in the guide it is outdated, but the rest of the guide stays the same).

Noam5651 said:
You can't rewrite the IMEI, I've have that issue before and I created a guide on how to fix it
https://forum.xda-developers.com/mi...-to-fix-efs-corruption-sim-card-t3928910/amp/
Enjoy
You can download the latest rom and install it (ignore the rom that's in the guide it is outdated, but the rest of the guide stays the same).
Click to expand...
Click to collapse
Thanks, will check it out the next couple of days.
I do see some websites/youtube video's of people/apps claiming it is possible by re-writing the QCN file...
I do know where i made a mistake, i tried to manually install all files in an image folder, including flashing a not-so-good QCN file...

terrorsource said:
Thanks, will check it out the next couple of days.
I do see some websites/youtube video's of people/apps claiming it is possible by re-writing the QCN file...
I do know where i made a mistake, i tried to manually install all files in an image folder, including flashing a not-so-good QCN file...
Click to expand...
Click to collapse
https://forum.xda-developers.com/mi-a2-lite/how-to/sim-network-solution-alternatively-t3914161
if this doesn't work ,pm me

nikoman1987 said:
https://forum.xda-developers.com/mi-a2-lite/how-to/sim-network-solution-alternatively-t3914161
if this doesn't work ,pm me
Click to expand...
Click to collapse
Works partially!
I cannot install the latest "QPST_2.7.453" due to "Installation errors".
If i try "QPST_2.7.422" i can restore the created QCN but i cannot select "Enable Multi-SIM" and it only restores IMEI-1

nikoman1987 said:
https://forum.xda-developers.com/mi-a2-lite/how-to/sim-network-solution-alternatively-t3914161
if this doesn't work ,pm me
Click to expand...
Click to collapse
Works now! both IMEI's are now shown in the settings.
IMEI SV is still at 0 though.
Your manual needs some work though.
Latest QFI: https://androidmtk.com/download-qualcomm-flash-image-loader-qfil
Enable Multi-SIM is not in all versions. I've used v2.0.1.9
Restoring QCN with this version can take a while. DO NOT USE PC until done!
8. daisy_sprout:/ $ su
/system/bin/sh: su: not found
127|daisy_sprout:/ $ setprop sys.usb.config rndis,diag,adb
setprop: failed to set property 'sys.usb.config' to 'rndis,diag,adb'
16. is not "QPST.exe" but "QFIL.exe"
20. 21. 22. not needed. directly went to 23 from 19.
stopped at 27, rebooted phone, IMEI's are back. Did not proceed with the manual any further.

terrorsource said:
Works now! both IMEI's are now shown in the settings.
IMEI SV is still at 0 though.
Your manual needs some work though.
Latest QFI: https://androidmtk.com/download-qualcomm-flash-image-loader-qfil
Enable Multi-SIM is not in all versions. I've used v2.0.1.9
Restoring QCN with this version can take a while. DO NOT USE PC until done!
8. daisy_sprout:/ $ su
/system/bin/sh: su: not found
127|daisy_sprout:/ $ setprop sys.usb.config rndis,diag,adb
setprop: failed to set property 'sys.usb.config' to 'rndis,diag,adb'
16. is not "QPST.exe" but "QFIL.exe"
20. 21. 22. not needed. directly went to 23 from 19.
stopped at 27, rebooted phone, IMEI's are back. Did not proceed with the manual any further.
Click to expand...
Click to collapse
We'll I have never had an issue with losing my IMEI , the manual is not mine ,I'm glad that it worked!

No SIM recognition after OOS 10.0.1 update - EFS problem??

Hi,
I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full nandroid backup before.
Everything went fine until I noticed that during the booting of the phone after the flashing, it didn't ask for the SIM code as it used to. And once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network.
I tried switching Sim cards with another mpbile. My SIM worked fine in the other mobile and the other SIM was not recognized by my mobile.
I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done before. Nothing. Same thing with the modem partition. Nothing.
I tried then to restore the EFS from a safety backup that I had using Fastboot. Nothing.
I could still try to restore the full nandroid backup done at the beginning, but I forgot to take out pin protection code before taking the Nandroid, and I've read somewhere that it could be an issue after restoring the system. I might not be able to restart the phone and be obliged to factory reset, witch I would really like to avoid. And anyway, if restoring with Fastboot did not work, I wonder if the full restore would change anything.
Anyway, anybody has a magic idea about might be happening? A little help please??

Same problem!
I'm having the same problem. I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full TWRP backup before, including my EFS partition.
I'm seeing this too:
>"once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. >They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network."
I did the same thing and had the same no result.
>I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done >before. Nothing. Same thing with the modem partition. Nothing.
I'm looking for a solution too.
I came across this: https://forum.xda-developers.com/oneplus-5t/help/baseband-imei-lost-t3834334 and this: https://www.getdroidtips.com/how-to-repair-and-fix-imei-baseband-on-oneplus-5t-a5010/
I've been reluctant to try and rebuild the QCN file, but it might work.

Working on this
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
rootlessabroad said:
I'm having the same problem. I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full TWRP backup before, including my EFS partition.
I'm seeing this too:
>"once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. >They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network."
I did the same thing and had the same no result.
>I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done >before. Nothing. Same thing with the modem partition. Nothing.
I'm looking for a solution too.
I came across this: https://forum.xda-developers.com/oneplus-5t/help/baseband-imei-lost-t3834334 and this: https://www.getdroidtips.com/how-to-repair-and-fix-imei-baseband-on-oneplus-5t-a5010/
I've been reluctant to try and rebuild the QCN file, but it might work.
Click to expand...
Click to collapse

Hi
I've found a code (*#06#) in a page that gives you the MEID. It worked for me. Hopefully, I have the correct MEID too. The code for the IMEI did not show anything. I'll check the lynks you posted later today.
Thanks for sharing!!
PS. I can not include the lynk to codes page as I'm too junior a member and XDA forums won't let me.
rootlessabroad said:
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
Click to expand...
Click to collapse

So I've tried te rebuild the QCN file. But my issue is that I can't make the ADB comunicate with my mobile. It is as the mobile was not plugged in?? The usb debugging is activated. I can browse the mobile memory from the computer. But the ADB doesn't lynk with the mobile; when you type adb devices, it says List of devices attached and nothing after. Any idea what might be happening?
What about you rootlessabroad? could you fix it?
rootlessabroad said:
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
Click to expand...
Click to collapse