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L720 galaxy s4 sprint go back to stock issue

http://forum.xda-developers.com/showthread.php?t=2415587
http://forum.xda-developers.com/showthread.php?t=2530610
I used those 2 threads trying unlock my L720, I followed everything up and It went smoothly It worked with (Simple mobile & Straight talk att sim card) but I was not getting a constant service, decided to go back to sprint and then, just trying to go back to stock firmware!
I am getting "Firmware upgrade encountered an issue.." in Odin every time that I try MDC, MK2 Stock firmwares says "FAIL! (Auth)" ?????
The only tar that is working is MDC modem tar found on the 1st thread used to downgrade modem to MDC, even though I was in NG2 which is the latest i was stock and rooted!
Then the phone boot up there's no sound no WiFi touch problems or is it the phone is really slow!?. I did a factory reset and nothing!
Another thing, but I noticed this since unlocked it! there is a picture too! Baseban and build are different!
Please any help would be appreciatte it!1 Thank you!

G920F Weirdness Firmware

Hello,
Just bought a topaz blue unlocked S6. I think it came from an Asian country. The phone arrived perfectly with plastic in box with the same IMEI as phone. However it was rooted with SU. I went into the app and clicked to remove root. It was on 5.0.2. They I tried to flash original firmware with Smart Switch with no success.
I used odin to flash stock 5.1.1 firmware from the UK. The firmware was for 920F. It went all good. I have LTE, SMS and phonecalls. However, sometimes the baseband appears as unknown, but I still can make calls and have LTE. And it still shows the same IMEI as it is on the box and it has always shown it. Is there a way to fix this? Now, I try to flash stock firmware with Smart Switch and it says it can't initialize.
I would REALLY appreciate help. I would love to be able to flash stock firmware from Smart Switch.
I'm in México with Telcel, which uses the same bands as AT&T.
P.S. I really searched and couldn't find anything on my specific situation.

That happened to me when I was still on 5.0.2 and flashed only the 5.1.1 modem. I would suggest downloading the modem.tar file and flash that. Should all be good after that.

I'm currently downloading G920FXXU1AOD4 BTU firmware to flash it with Odin. Might that help me better? My main goal is to be 100% stock without any weirdness. And having Smart Switch recognize my phone!

Well, I'm sad.

calot said:
I'm currently downloading G920FXXU1AOD4 BTU firmware to flash it with Odin. Might that help me better? My main goal is to be 100% stock without any weirdness. And having Smart Switch recognize my phone!
Click to expand...
Click to collapse
You cannot downgrade to 5.0.2 from 5.1.1. Your bootloader will not support. I have the issue with 3G connection. Where to get the Modem.tar?

Flashed stock firmware through Odin and now phone doesnt recognize my network

After flashing a stock android 7.0 firmware with Odin my phone boots up normally without any problems, however it doesnt detect my network.
The firmware I used was from argentina, which is not my country but uses the same 4g bands so i figured it wouldnt matter.
is there a way to fix this? or i just have to flash to my old firmware (which I totally forgot which one was it).
I would appreaciate any help, Im a novice when it comes to this stuff.

back to stock
After the root to the stock firmware, did you a factory reset?
Sometimes it will help after you put your phone back in stock firmware.

nathanxpl said:
After flashing a stock android 7.0 firmware with Odin my phone boots up normally without any problems, however it doesnt detect my network.
The firmware I used was from argentina, which is not my country but uses the same 4g bands so i figured it wouldnt matter.
is there a way to fix this? or i just have to flash to my old firmware (which I totally forgot which one was it).
I would appreaciate any help, Im a novice when it comes to this stuff.
Click to expand...
Click to collapse
Call your provider and ask them to reprovision your device on their end. That helps often.

Flashed U firmware to a U1 but no Carrier apps

I have a sm-g715u1 with latest android 11 firmware and flashed the verizon G715USQU7BUC1. Both are latest ota firmware.
Odin (3.141) showed a succesful flash with all 5 bl,ap, cp,csc and userdata put in. The csc file was non home. However, I dont see any verizon apps installed. There were changes and it does show the U version software installed but no verizon apps. I saw no errors in odin and flashed it twice but no change. I did a factory reset from phone app before flashing a second time.
Not sure what i did wrong . I left the SD card in but dont think that matters.
It has verizon splash screen on startup but thats it. The phone is functional but no different than U1
Is this version (3.14.1) of Odin ok for U1 to U flashing?
Should i have factory reset before flashing? Flash from recovery and not the phone software?
Any ideas will be appreciated.

GMANNOT said:
I have a sm-g715u1 with latest android 11 firmware and flashed the verizon G715USQU7BUC1. Both are latest ota firmware.
Odin (3.141) showed a succesful flash with all 5 bl,ap, cp,csc and userdata put in. The csc file was non home. However, I dont see any verizon apps installed. There were changes and it does show the U version software installed but no verizon apps. I saw no errors in odin and flashed it twice but no change. I did a factory reset from phone app before flashing a second time.
Not sure what i did wrong . I left the SD card in but dont think that matters.
It has verizon splash screen on startup but thats it. The phone is functional but no different than U1
Is this version (3.14.1) of Odin ok for U1 to U flashing?
Should i have factory reset before flashing? Flash from recovery and not the phone software?
Any ideas will be appreciated.
Click to expand...
Click to collapse
I see that i can no longer access special menus via the dial pad like I did before the flash. Its like a partial install of the userdata file or something.

So things i noticed after the vzw flash: I didnt get the full verizon bloatware and lost some of the samsung unbranded advantages. I have the vzw 4G icon and Hd voice icon during calls and had the video call option. Video calling didnt work and had to call vzw tec support to get it turned on. A ticket was opened to have it done and its now working fine. Before the flash i was told it couldnt be done so flashing to vzw must have helped here. One thing i have noticed is reception in fringe areas after flash in terrible by comparison. It now enters extended network or no signal at all where before it stayed on lte even with 1 bar and could text and call. This must be a PRL difference or something. The unlocked, unbranded version is way way better for fringe areas. In town i noticed no difference.
At this point i could try to enter recovery and wipe then direct to flash the vzw firmware again to see if i get all the bloatware but to be honest the poor signal and tower handoff with the vzw firmware has convinced me that the U1 firmware is better for me overall even if i lose the video calling after switching back.
At least with the U1 version its a little easier to experiment to see what works best.

Question Samsung S21 VZN need unlocked or converted to ATT. Tried odin.. Maybe I am an idiot.

Hello.
Got a free phone from a buddy S21 5G. I am wanting to swap it for the S10* 1tb I gave my wife to use it was a bit expensive. So I'd rather ti go back in the box.
Popped the sim in it, it works makes calls sometimes, sometimes not. Texts seem to always work, I am currently on ATT I would prefer to have that firmware as I live in the stick with ho cell service. ATT has wifi calling which is pretty much a necessity here.
So what exactly do I need to do to get this off the VZN fir

Hello. Could you all provide me the links for what I need? Found a link that had a patched Odin plus the firmware. I installed in booted how I was suppose to. Tried to install in and it errored out. Also. I do not know what file to select for the user data selection, I do not mind deleting all data as it 8s hacked up and can put ti back with smart switch.

Hello, did you manage to flash the phone?, I'm stuck with a similar case, mine is a factory unlocked unit from Verizon, it turns out that even if it is factory unlocked, is locked after a few minutes by verizon, I have tried everything to get rid of the VZW firmware but it seems that Verizon locks the bootloader so I can't flash it (it passes om odin and everything but the firmware doesn't change)
I even paid SamKEY credits to change the CSC but it didn't change either.

tylerdustin2008 said:
Hello. Could you all provide me the links for what I need? Found a link that had a patched Odin plus the firmware. I installed in booted how I was suppose to. Tried to install in and it errored out. Also. I do not know what file to select for the user data selection, I do not mind deleting all data as it 8s hacked up and can put ti back with smart switch.
Click to expand...
Click to collapse
Did you ever get your issue fixed?

can anyone suggest to me whether moving from Apple to Samsung is a good option or not? pc games