OOOKAAAYY.....after many months of flashing and downloading files. I managed to get AT&T firmware, and modem onto my SPRINT SPH-L720T. I believe it happened after I got rid of anything carrier based, and flashed a google based rom, and then flashed AT&T firmware, CSC file, Modem, and Kernel. Heres the catch...when I did this I lost root and went back to stock recovery. It takes a while to boot, but the at&t firmware loads even with all the AT&T bloat apps, However my baseband is still stuck on L720TVPUBNC6 which is the baseband for sprint galaxy s4. Originally I upgraded it when it still had sprint firmware all the way to android 4.4, but after all the flashing to KK Rom, Cynanongenmod, liquidsmooth etc until the present I cannot change the baseband even when I flash with odin or from recovery mode on the sd card. Do I need to reacquire root , and a custom recovery to do this? Ive spent so many days, and hours doing this, and im finally on the edge of converting this phone completely to AT&T from sprint. My wifi also does not work which I believe is related to to mismatched baseband. Can anyone help?
elight7286 said:
OOOKAAAYY.....after many months of flashing and downloading files. I managed to get AT&T firmware, and modem onto my SPRINT SPH-L720T. I believe it happened after I got rid of anything carrier based, and flashed a google based rom, and then flashed AT&T firmware, CSC file, Modem, and Kernel. Heres the catch...when I did this I lost root and went back to stock recovery. It takes a while to boot, but the at&t firmware loads even with all the AT&T bloat apps, However my baseband is still stuck on L720TVPUBNC6 which is the baseband for sprint galaxy s4. Originally I upgraded it when it still had sprint firmware all the way to android 4.4, but after all the flashing to KK Rom, Cynanongenmod, liquidsmooth etc until the present I cannot change the baseband even when I flash with odin or from recovery mode on the sd card. Do I need to reacquire root , and a custom recovery to do this? Ive spent so many days, and hours doing this, and im finally on the edge of converting this phone completely to AT&T from sprint. My wifi also does not work which I believe is related to to mismatched baseband. Can anyone help?
Click to expand...
Click to collapse
Which recovery would I need now sprint file or at&t?
Android 4.2.2
samsung SGH-I337/SPH-L720T
baseband: l720tvpubnc6
kernel: 3.4.0 812098
[email protected]#1
SELinux status: permissive
build number: JDQ39.I337UCUAMF3
secure boot status: type: samsung
Hi,
I'd suggest you ask for help in this thread dedicated to your model,
Sprint Samsung Galaxy S 4 > Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshooting > [q] ALL THINGS GALAXY S4 (GS4) MODEL SPH-L720T
Good luck!
Thank you. Thread closed.
bought a Galaxy S6 model SM-S906L (StraightTalks/Tracfone), the previous owner somehow flashed cricket firmware, it boots into new phone setup but screen doesn't respond. trying to find a TracFone firmware because i did try Verizon and TMobile, with no luck. please help if you've been through this or have any knowledge/suggestions.
troolplay said:
bought a Galaxy S6 model SM-S906L (StraightTalks/Tracfone), the previous owner somehow flashed cricket firmware, it boots into new phone setup but screen doesn't respond. trying to find a TracFone firmware because i did try Verizon and TMobile, with no luck. please help if you've been through this or have any knowledge/suggestions.
Click to expand...
Click to collapse
There is currently no Stock Odin flashable firmware file for this model. My advise to you is with the use of a custom rom.
EDIT:
I was able to fix it! I had to install a custom ROM to obtain root and delete my EFS partition.
So, here is a bit of a story I will try to keep short.
I went to Vietnam and bought a S8+ from there.
It was a US S8+ from Sprint.
I used it fine there but when I came back to states I tried to put my Verizon sim in and it doesn't work.
I don't get any signal. But I am able to see Baseband and IMEI.
So, I tried to use Odin and flash one of the SM-G955U1 Firmware.
Now, my phone is weird and out with no Baseband or IMEI.
So I try to flash back to firmware it was on.
Same thing.
Any ideas why my S8+ is like this?
MLIGN said:
So, here is a bit of a story I will try to keep short.
I went to Vietnam and bought a S8+ from there.
It was a US S8+ from Sprint.
I used it fine there but when I came back to states I tried to put my Verizon sim in and it doesn't work.
I don't get any signal. But I am able to see Baseband and IMEI.
So, I tried to use Odin and flash one of the SM-G955U1 Firmware.
Now, my phone is weird and out with no Baseband or IMEI.
So I try to flash back to firmware it was on.
Same thing.
Any ideas why my S8+ is like this?
Click to expand...
Click to collapse
Can you get into recovery/download mode now? What was the last known version of software you know that was on your phone?
If you can get into recovery, what info are in those details?
JeffDC said:
Can you get into recovery/download mode now? What was the last known version of software you know that was on your phone?
If you can get into recovery, what info are in those details?
Click to expand...
Click to collapse
Sorry for the long wait. If you are still interested.
CARRIER: SPR
RPMB fuse blown
RPMB PROVISIONED
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
FRP LOCK: OFF
WARRANTY VOID: 0x0
QUALCOMM SECUREBOOT: ENABLE
RP SWREV : B3(1,1,1,1,1) K2 S3
SECURE DOWNLOAD: ENABLE
DID: 205EDC8B7351
- duplicate
MLIGN said:
- duplicate
Click to expand...
Click to collapse
What happens if you restore from the OEM function?
Try downloading custom recovery and flashing a custom rom. You will lose samsung pay but you might have a working phone it's a chance I would take if it was me. Your baseband is messed up try just flashing your carrier baseband . These are just ideas good luck
Sent from my [device_name] using XDA-Developers Legacy app
If flashing a custom ROM will fix your phone then so will downloading latest official Samsung ROM and flashing via latest Odin .
The second option above would be the best to try unless you're happy to have a custom rom and lose Samsung pay and anything that relies on Knox being functional
paul_59 said:
If flashing a custom ROM will fix your phone then so will downloading latest official Samsung ROM and flashing via latest Odin .
The second option above would be the best to try unless you're happy to have a custom rom and lose Samsung pay and anything that relies on Knox being functional
Click to expand...
Click to collapse
Update on the post, I sent it into Samsung. I should hear word soon if they can fix it and how much if anything.
Jtag dead phone to life and rewrite IMEI
First of all my phone is the s8+ G955fd, but I am sure that the people that helped me can help most Samsung owners with bricked phones.
My phone ended up being stuck on the first boot screen, I couldn't get into recovery or download mode. I installed TWRP and after that I lost my IMEI numbers( dual sim), so I tried to reflash stock and thats when i became bricked. I searched someone to help and found reference to the Fonefunshop in England. I sent it there and they said that the eMMC chip was bad. I searched for someone who could write to it or put a new one on the motherboard . I found A2Z cellular in Ottawa Canada. They used jtag to restore it to stock and they told me that the Fonefunshop had not opened the phone which is necessary to use jtag as they claimed, so avoid them.
The phone was now back doing everything it should except the IMEI's were null like before. I gave them the original IMEI's and the phone is working like new.
If your Samsung is bricked these guys can probably fix it and it won't cost much to find out.
the SM-G955U has a locked bootloader, so people should not be telling you to flash a custom recovery or custom ROMs. there is only one way to get root on this phone, through the samfail exploit, and safestrap is the only working recovery. I don't believe it supports CDMA networks but I'm not 100% sure on that. I have this device and I'm only aware of GSM carriers using it.
Just an update on this issue. I still don't have a working Baseband or IMEI. Any clues?
I was able to fix it! I had to install a custom ROM to obtain root and delete my EFS partition via ADB.
MLIGN said:
I was able to fix it! I had to install a custom ROM to obtain root and delete my EFS partition via ADB.
Click to expand...
Click to collapse
Hi. Can you detail how you fixed you phone please? What custom rom did you use and the steps you used please? I have the same phone with the same problem.
Thanks
MLIGN said:
I was able to fix it! I had to install a custom ROM to obtain root and delete my EFS partition via ADB.
Click to expand...
Click to collapse
Be very careful with doing that. It can cause the EFS (the partition that controls IMEI, Mac and a few other things) to be completely corrupted. Which will cause the device to be useless without fixing it.
Now a little heads up. As messing with the IMEI is illegal in many countries (the US being one of them) There are only 2 ways to fix an IMEI issue allowed on XDA.
1. Restore the backed up EFS partition
2. Return it to the OEM to be repaired.
What did you do after you deleted EFS? I can delete in Combination but I dont get the IMEI number back.
Please I need all XDA members assist ,because of I mistake delete EFS with combination file on my G955U VZW , I have null imei number, then I repair it by flash qcn with z3x Samsung tool , but still I have IMEI number but emergency call only is still display without service ,
My friend got his phone's frp locked and the phone wont go past the Samsung logo. Like a good friend, I took his phone and flashed it with stock ROM from androidmtk. It boots up fine. After loging in with previous id, The network doesnt work. The imeis in *#06# are generic and different than the imei in the back. I think the firmware is not the right one. The phone doesnt have any network bar and in "Emergency calls only: mode.
What can I do? I am not that good with these stuffs. I used odin to update Galaxy s7 successfully once.
I would appreciate if you guys can drop a link to appropriate firmware.
Model: J710FN/DD
FCC ID: A3LSMJ710FN
SSN: -J710FN/DDGSMH
Also if there is anyother way to recover imei please let me know.
Hello guys,
I have been stuck in this for about a week now. Have read tons and gone through a bunch of videos but still stuck. I will greatly appreciate any help.
I was trying to unlock a Samsung Galaxy J3 Luna Pro SM-S337TL (GP) Tracfone.
Downloaded and flashed the combination file using odin but after booting into the binary it show:
CP Crash
Upload Mode
Secure NV read decrypt fail.
Because of this I am unable to complete the network unlock. After several trials I flashed the 4files and got back into the phone, to discover the IMEI and Baseband are gone.
I have tried to download and flash many versions of the Stock ROM for model and even used KIES to find the corresponding Firmware version using the Serial number, but I can't seem to get them back.
I didn't backup before I started. Big MISTAKE.
How do I fix the device to be be unlocked and get the IMEI and Baseband back? One step at a time please.