G920F Weirdness Firmware - Galaxy S6 Q&A, Help & Troubleshooting

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?

Related

Failing to flash stock firmware.

As title says I am having trouble flashing original stock firmware onto my phone.
The model number is: SM-G920F.
I originally installed a rom which caused my phone to lose it's baseband. I then tried to flash a stock firmware and it didn't work. In ODIN it just fails instantly.
I noticed that in download mode it says that the "product name is: SM-G920P" however.
So I flashed the G920P instead which got it working back to normal.
The only problem is I don't live in the US. I live the UK. The firmware is rejecting my sim card.
I want to flash the G920F and am having some trouble. If anyone could help I would appreciate it if someone could talk me through this.
I have looked around the forums etc and I haven't seen a solution to my problem.
Thanks in advance.
You've got a CDMA version of the S6, as far as I know, no UK carrier uses CDMA, they use GSM, so you're out of luck if you want to get it to work in the UK.
teekeiwong said:
As title says I am having trouble flashing original stock firmware onto my phone.
The model number is: SM-G920F.
I originally installed a rom which caused my phone to lose it's baseband. I then tried to flash a stock firmware and it didn't work. In ODIN it just fails instantly.
I noticed that in download mode it says that the "product name is: SM-G920P" however.
So I flashed the G920P instead which got it working back to normal.
The only problem is I don't live in the US. I live the UK. The firmware is rejecting my sim card.
I want to flash the G920F and am having some trouble. If anyone could help I would appreciate it if someone could talk me through this.
I have looked around the forums etc and I haven't seen a solution to my problem.
Thanks in advance.
Click to expand...
Click to collapse
You can try using "Smart Switch". I wasn't able to flash ITV firmware over the BTU, it failed at hidden. I tryed with Smar Switch and it work.

Problem with flash Stock Firmware Nougat. No signal, only emergency Calls.

Hi Guys
First of all, i´m sorry my english is not very good and i have to use a Translator.
I recently bought a used SM-G930F. The previous owner had flashed before so although everywhere says SM-G930F in settings in "model information" says "SM-G930FD". Also when a SIM is inserted the "DualSIM Administrator" appears. Had Mashmallow installed and worked perfectly.
I wanted to try flashing the new NOUGAT BTU firmware stock. I did it through ODIN. The process had no errors. When the phone restarted I see that it has no signal. It recognizes that you have a SIM card inserted but "emergency calls only" appears.
The IMEI was not deleted.
Immediately I downloaded a stock firmware from my country ARGENTINA to go back to MARSHMALLOW and I installed it but the same thing is still happening. Then I tried to download another stock firmware from my country and my operator CLARO ARGENTINA, but the same thing is still happening.
I read in forums that the problem may be the modem, but I understand that is modified in the box "CP" of ODIN when flashing.
I honestly do not know what else to do. I also do not remember what firmware I had before doing the whole process.
I understand I should have backed up everything but I did not.
So I ask you please if you can help me.
Thank you very much
dhg2015 said:
Hi Guys
First of all, i´m sorry my english is not very good and i have to use a Translator.
I recently bought a used SM-G930F. The previous owner had flashed before so although everywhere says SM-G930F in settings in "model information" says "SM-G930FD". Also when a SIM is inserted the "DualSIM Administrator" appears. Had Mashmallow installed and worked perfectly.
I wanted to try flashing the new NOUGAT BTU firmware stock. I did it through ODIN. The process had no errors. When the phone restarted I see that it has no signal. It recognizes that you have a SIM card inserted but "emergency calls only" appears.
The IMEI was not deleted.
Immediately I downloaded a stock firmware from my country ARGENTINA to go back to MARSHMALLOW and I installed it but the same thing is still happening. Then I tried to download another stock firmware from my country and my operator CLARO ARGENTINA, but the same thing is still happening.
I read in forums that the problem may be the modem, but I understand that is modified in the box "CP" of ODIN when flashing.
I honestly do not know what else to do. I also do not remember what firmware I had before doing the whole process.
I understand I should have backed up everything but I did not.
So I ask you please if you can help me.
Thank you very much
Click to expand...
Click to collapse
try flashing the specific modem and bootloader of your phone. you might want to try mashmallow modem.
You say I try flash only the modem and bootloader that come included in stock firmware from other countries? Must I only check the boxes "BL" and "CP" from ODIN? Thats correct?
dhg2015 said:
You say I try flash only the modem and bootloader that come included in stock firmware from other countries? Must I only check the boxes "BL" and "CP" from ODIN? Thats correct?
Click to expand...
Click to collapse
I also tested Firmware flash from several countries in America and others, for example Chile, Colombia, Brazil, Mexico, Germany, Portugal. I also tested with some G930FD firmware from Vietman, Singapore, but there was no case. The only thing that stands out is that with Vietnam although no signal, "allowed" the band 4G, did not allow it in all previous cases, do not know if something to see.
u have any issues with wi-fi?? it looks like a modem problwm to me..
Try flashing the stock rom back with the samsung kies program so it will flash back the original stock rom that came with the phone and see if you then have your connection back. If that works then try to flash the BTU.
RiTCHiE007 said:
Try flashing the stock rom back with the samsung kies program so it will flash back the original stock rom that came with the phone and see if you then have your connection back. If that works then try to flash the BTU.
Click to expand...
Click to collapse
Thanks very much for your answer, I tried it as you indicate, but unfortunately it does not work, it still has no signal
lekou said:
u have any issues with wi-fi?? it looks like a modem problwm to me..
Click to expand...
Click to collapse
Hi!
No, the Wi-Fi works fine
Phone is likely IMEI blocked (reported stolen)
Is it possible? I'll find out and tell you. Thank you
dhg2015 said:
Is it possible? I'll find out and tell you. Thank you
Click to expand...
Click to collapse
You're right, I took the phone to a technician and repaired it. Thank you very much for your help.
a.
Or maybe simlock
dhg2015 said:
You're right, I took the phone to a technician and repaired it. Thank you very much for your help.
a.
Click to expand...
Click to collapse
:good:

N920P issue to work in UK, upgraded to MM from china firmware N920F help!

Ok im really hoping someone can help me.
Bought a N920F (yup doesnt exist but N920p's have taken a trip to China to be turned into this strange model)
Now the phone was working fine on Lollipop, and model used to show N920V and baseband Sprint it was like a hybrid custom firmware probably hacked up to be used in UK, but download mode etc. showed it was a N920P originally. Now I wanted to upgrade to Marshmellow, before this I made a nandroid backup and also backed up Radio & Efs using app.
Upgraded succesfully with stock N920P and now no network, tried everything. Then thought I could downgrade via flash to Lollipop to no avail as I think its now locked to do so. Nandroid restore not happening as I believe its locked to restore also unless maybe I was on lollipop.
So now im stuck on stock N920p firmware thats not working in UK networks. Im about to give up, is there any solution. Would unlocking the phone in its current state unlock it to UK networks. I hope there is a solution.
Any help to the right direction is much appreciated.
Things ive tried
Downgrade-unsuccessful
Restore Partitions-unsuccessful
Flash N920V-unsuccessful
Full restores etc-unsuccessful
nandroid restore-unsuccesful
Kind Regards
oneshot12 said:
Ok im really hoping someone can help me.
Bought a N920F (yup doesnt exist but N920p's have taken a trip to China to be turned into this strange model)
Now the phone was working fine on Lollipop, and model used to show N920V and baseband Sprint it was like a hybrid custom firmware probably hacked up to be used in UK, but download mode etc. showed it was a N920P originally. Now I wanted to upgrade to Marshmellow, before this I made a nandroid backup and also backed up Radio & Efs using app.
Upgraded succesfully with stock N920P and now no network, tried everything. Then thought I could downgrade via flash to Lollipop to no avail as I think its now locked to do so. Nandroid restore not happening as I believe its locked to restore also unless maybe I was on lollipop.
So now im stuck on stock N920p firmware thats not working in UK networks. Im about to give up, is there any solution. Would unlocking the phone in its current state unlock it to UK networks. I hope there is a solution.
Any help to the right direction is much appreciated.
Things ive tried
Downgrade-unsuccessful
Restore Partitions-unsuccessful
Flash N920V-unsuccessful
Full restores etc-unsuccessful
nandroid restore-unsuccesful
Kind Regards
Click to expand...
Click to collapse
Check if there is a service menu in your settings
It should be named "activate this device"
oneshot12 said:
Ok im really hoping someone can help me.
Bought a N920F (yup doesnt exist but N920p's have taken a trip to China to be turned into this strange model)
Now the phone was working fine on Lollipop, and model used to show N920V and baseband Sprint it was like a hybrid custom firmware probably hacked up to be used in UK, but download mode etc. showed it was a N920P originally. Now I wanted to upgrade to Marshmellow, before this I made a nandroid backup and also backed up Radio & Efs using app.
Upgraded succesfully with stock N920P and now no network, tried everything. Then thought I could downgrade via flash to Lollipop to no avail as I think its now locked to do so. Nandroid restore not happening as I believe its locked to restore also unless maybe I was on lollipop.
So now im stuck on stock N920p firmware thats not working in UK networks. Im about to give up, is there any solution. Would unlocking the phone in its current state unlock it to UK networks. I hope there is a solution.
Any help to the right direction is much appreciated.
Things ive tried
Downgrade-unsuccessful
Restore Partitions-unsuccessful
Flash N920V-unsuccessful
Full restores etc-unsuccessful
nandroid restore-unsuccesful
Kind Regards
Click to expand...
Click to collapse
now the 920p firmware is locked out of the box if it was unlocked sometimes certain rom flashes will relock
as prev poster said activate device is for sprint users only will never work
have you tried to goto network settings and making sure its set for global or automatic.
also is it saying invalid sim or anything like that normally first signs of being relocked.
i paid 34.99 for a unlock from the idone app worked great.

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.

What happens if unlocked phone is upgraded via Odin?

I have an unlocked phone on Marshmallow.
Will it become locked again if I upgrade it to Nougat using Odin and the official firmware?
algarues said:
I have an unlocked phone on Marshmallow.
Will it become locked again if I upgrade it to Nougat using Odin and the official firmware?
Click to expand...
Click to collapse
I just bought a used note 5 it was running marshmallow stock rom and i did upgrade from marshmallow to NOUGAT and still my phone is UNLOCKED.sim card+data+calls+sms all working nice and battrry life is amazing.
Model SM-N920T
i flashed this latest firmware below via odin v3.12
https://androidfilehost.com/?fid=1322778262903991333
Thank you for the firmware source.
Just to clarify, you flashed only that AP, no additional modem or bootloader files?
In addition, is T-mobile a cell phone provider also in Arab emirates? I did some search in internet and it seems the answer is no.
Would it be possible somehow to compare if your phone and mine have been unlocked the same way?
Thank you for any additional help
algarues said:
Thank you for the firmware source.
Just to clarify, you flashed only that AP, no additional modem or bootloader files?
In addition, is T-mobile a cell phone provider also in Arab emirates? I did some search in internet and it seems the answer is no.
Would it be possible somehow to compare if your phone and mine have been unlocked the same way?
Thank you for any additional help
Click to expand...
Click to collapse
No my service provider is Etisalat not Tmobile but i bought this phone on Craigslist and it was locked on Tmobile network so the owner sold me very very cheap he didn't know how to unlock it.
I bought it in 140$ and and it's brand new condition almost untouched.
i used a software in windows pc called "Z3X samsung tool pro v29.2" a cracked version to be honest to unlock this phone permanently.
After that i flashed nougat via odin just in AP tab and still unlocked.
I did not flash modem or bootloader separately because this firmware comes in full package Bootloader+Modem+CSC+System all you have to do is use AP tab and upload firmware then flash it.but remember you have to do factory reset from stock recovery immediately after flashing successfully otherwise it can get bootloop
Even though i try Tmobile sim unlock app that comes pre installed but it didn't worked cuz i don't have Tmobile sim card.
I am not sure your phone situation to be honest but since its UNLOCKED already so give it a nougat shot.

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