Hi, I have an SGH-I747M that was originally purchased through Bell. In an attempt to unlock to make it work on Koodo, I went through SamMobile (after reading there was no way to unlock post 4.3 OTA update) and that seemed to half work.They resell a service from 123unlock.nl which is a client that uses adb or something of the sort to mess with phone files. The program afterwards said "Your phone is now unlocked! However if you don't see any carriers you need to do something in the advanced option and pay another $2x.xx dollars to do so". I didn't feel like giving them any more money at this point because I was upset that what I originally paid for didn't work properly. The fix was apparently an option in the advanced options that was an NVM repair/rebuild or something of the sort. I should have screenshotted the issue but of course didn't.
Now, the phone will boot up and does not offer me a SIM unlock option anymore. When searching for carriers it will ever only find Rogers for some reason. It won't recognize Koodo or Telus or anything of the sort (or bell when my bell SIM is in). Every now and then when it boots up, it will successfully send a text but only within a 5-10 second time frame after boot (I've made 1 phone call as well for 3 seconds). I've tried the Koodo SIM in my own Nexus 5 and works fine so the network is okay at least (plus I called Koodo and they verified on their end things look good... if that makes a difference). The SGS3 won't even accept an original Bell SIM at this point. It's always on either no network, 1 bar or full bars, never anything in between. I've tried flashing different ROMs from Bell stock to Koodo stock and CM11 and it won't work no matter what I do. Under all ROMs it pops up an "ME Returned temporary error" message on the screen.
I'm hoping someone might have seen this issue before or know what's going on with the phone that I can fix. I'm assuming it's something to do with the modem part of the phone that's refusing to connect to carriers but I'm at a loss to fix it. I haven't tried flashing different modems on it yet because I'm unsure which one would be a good fix and no one has had roughly the same issue I could find in 3 days of Googling for this issue. Any ideas are greatly appreciated. Thanks.
sgtcanadian said:
Hi, I have an SGH-I747M that was originally purchased through Bell. In an attempt to unlock to make it work on Koodo, I went through SamMobile (after reading there was no way to unlock post 4.3 OTA update) and that seemed to half work.They resell a service from 123unlock.nl which is a client that uses adb or something of the sort to mess with phone files. The program afterwards said "Your phone is now unlocked! However if you don't see any carriers you need to do something in the advanced option and pay another $2x.xx dollars to do so". I didn't feel like giving them any more money at this point because I was upset that what I originally paid for didn't work properly. The fix was apparently an option in the advanced options that was an NVM repair/rebuild or something of the sort. I should have screenshotted the issue but of course didn't.
Now, the phone will boot up and does not offer me a SIM unlock option anymore. When searching for carriers it will ever only find Rogers for some reason. It won't recognize Koodo or Telus or anything of the sort (or bell when my bell SIM is in). Every now and then when it boots up, it will successfully send a text but only within a 5-10 second time frame after boot (I've made 1 phone call as well for 3 seconds). I've tried the Koodo SIM in my own Nexus 5 and works fine so the network is okay at least (plus I called Koodo and they verified on their end things look good... if that makes a difference). The SGS3 won't even accept an original Bell SIM at this point. It's always on either no network, 1 bar or full bars, never anything in between. I've tried flashing different ROMs from Bell stock to Koodo stock and CM11 and it won't work no matter what I do. Under all ROMs it pops up an "ME Returned temporary error" message on the screen.
I'm hoping someone might have seen this issue before or know what's going on with the phone that I can fix. I'm assuming it's something to do with the modem part of the phone that's refusing to connect to carriers but I'm at a loss to fix it. I haven't tried flashing different modems on it yet because I'm unsure which one would be a good fix and no one has had roughly the same issue I could find in 3 days of Googling for this issue. Any ideas are greatly appreciated. Thanks.
Click to expand...
Click to collapse
Can you check your phone's settings => About Device and let's know what parameters you have there (Android Version, Baseband Version, Build Number>.
You mentioned you can send text or make call within a limited time frame. Was that with the Koodo SIM or the Bell? If the former, it would suggest the phone is unlocked to some extent but you are probably experiencing a baseband failure or need to correct the APN settings. Did you also try doing a factory reset?
Larry2999 said:
Can you check your phone's settings => About Device and let's know what parameters you have there (Android Version, Baseband Version, Build Number>.
You mentioned you can send text or make call within a limited time frame. Was that with the Koodo SIM or the Bell? If the former, it would suggest the phone is unlocked to some extent but you are probably experiencing a baseband failure or need to correct the APN settings. Did you also try doing a factory reset?
Click to expand...
Click to collapse
The information you're asking for is attached.
The texts I got off were from the Koodo SIM. I have updated the APN as well, and I did do a flash back to stock resetting all settings through Kies emergency update. I found a little trick where if you softbrick it by trying to flash 4.1, it'll give you the "Please use kies" error and that'll take you back to full stock 4.3. I'm pretty sure the baseband failure is the option I need to explore but at this point I don't know where to go to fix this.
Edit: I read this online and tried it: "The 4.3 update introduces a "security feature" which requires carrier- or region-locked phones to be activated once on the original locked network before the unlock code will work." The phone didn't recognize any network with the Bell SIM in except "EXT" which I've never heard of before and it did not connect properly so that didn't work. I also read that inputting #7465625*638*# will give me the Samsung SIM unlock menu which it did however I don't think the issue here is with the root and I'd hate to pay $50 at this point to have that not work as well.
sgtcanadian said:
The information you're asking for is attached.
The texts I got off were from the Koodo SIM. I have updated the APN as well, and I did do a flash back to stock resetting all settings through Kies emergency update. I found a little trick where if you softbrick it by trying to flash 4.1, it'll give you the "Please use kies" error and that'll take you back to full stock 4.3. I'm pretty sure the baseband failure is the option I need to explore but at this point I don't know where to go to fix this.
Edit: I read this online and tried it: "The 4.3 update introduces a "security feature" which requires carrier- or region-locked phones to be activated once on the original locked network before the unlock code will work." The phone didn't recognize any network with the Bell SIM in except "EXT" which I've never heard of before and it did not connect properly so that didn't work. I also read that inputting #7465625*638*# will give me the Samsung SIM unlock menu which it did however I don't think the issue here is with the root and I'd hate to pay $50 at this point to have that not work as well.
Click to expand...
Click to collapse
It's unlikely to be the regional lock as this feature means your phone will work with compatible networks in the region but not in other regions. You may, however, run Chainfire's Region Lock Away to be sure <http://forum.xda-developers.com/showthread.php?t=2470551>
Your firmware settings look OK so I'd be doubtful about a corrupted modem. You may still try to re-flash the modem via custom recovery. Download link for the CWM flashable zip is available here ... http://www.androidfilehost.com/?fid=23252070760973552
The guys who sold you the original code seem to have sold a dud as there is no reason for them to be asking for secondary payments and this sounds like the footprint of a regular scam. I'd be surprised though as they seem to be well rated
Larry2999 said:
It's unlikely to be the regional lock as this feature means your phone will work with compatible networks in the region but not in other regions. You may, however, run Chainfire's Region Lock Away to be sure <http://forum.xda-developers.com/showthread.php?t=2470551>
Your firmware settings look OK so I'd be doubtful about a corrupted modem. You may still try to re-flash the modem via custom recovery. Download link for the CWM flashable zip is available here ... http://www.androidfilehost.com/?fid=23252070760973552
The guys who sold you the original code seem to have sold a dud as there is no reason for them to be asking for secondary payments and this sounds like the footprint of a regular scam. I'd be surprised though as they seem to be well rated
Click to expand...
Click to collapse
I've tried reflashing the modem and I've actually paid $50 for the unlock code from Bell, the original carrier. I used the code to get the network unlock menu and inserted the code. I still get between 1-4 bars now with no network access on either network. It's not showing anything except Rogers still in network operator selection.
Any ideas at this point? It refuses to connect to any networks. I'm out of options.
Edit: I don't know if this makes a difference, but when I do root explorer I can't actually find the nv_data.bin file. It doesn't have anything of the sort in the /efs folder.
sgtcanadian said:
I've tried reflashing the modem and I've actually paid $50 for the unlock code from Bell, the original carrier. I used the code to get the network unlock menu and inserted the code. I still get between 1-4 bars now with no network access on either network. It's not showing anything except Rogers still in network operator selection.
Any ideas at this point? It refuses to connect to any networks. I'm out of options.
Edit: I don't know if this makes a difference, but when I do root explorer I can't actually find the nv_data.bin file. It doesn't have anything of the sort in the /efs folder.
Click to expand...
Click to collapse
Please let me understand a few things ... when you first acquired the phone, was it working normally on Bell prior to the first unlock attempt or you never used it at all until you tried Koodo? Secondly, was the unlock code you got from Bell identical to the one you got from the online service?
I'm trying to establish if it is a case of hardware failure not reported by the previous user especially if you bought it pre-owned from the secondary market. If you are not sure of the previous usage history, it could be a faulty or disconnected antenna which may require professional service. On the other hand if you are sure it was working fine prior to the unlock attempt, try the following ...
1) From the dial pad, enter *#197328640#
2) [1] UMTS
3) [1] DEBUG SCREEN
4) [8] PHONE CONTROL
5) [6] NETWORK LOCK
6) [3] PERSO SHA256 OFF
7) Press Menu => Back button and go all the way back to Step 3) above
8) [6] COMMON
9) [6] NV REBUILD
10) [1] NV REBUILD
Reboot and restart and let's see if this does it.
I've got a similar symtom different scenario (sister in-laws phone). I was also only able to see Rogers network on a search. I've got Telus version. It was working fine until it was brought to the Philippines, got unlocked there and brought back to Canada.
I was only able to see Rogers network until I went into the Service Menu (similar to above) and found the option to change the band. I changed it to Automatic. After that I was able to see Telus network. When trying to connect/register it would take a long time and give me an error "Unable to connect, try again later". I still need to do more troubleshooting, but that might be something to look at.
Note: Phone has stock MOD ROM, rooted and unlocked.
Related
Hi, and firstly, thanks to any and all who offer their knowledge to assist my conundrum.
I recently purchased a Bell Canada version of the SG Note 2 (i317), I am on Telus so I attempted to Unlock the phone. I looked online and found people were having success unlocking these phones for free using the *#197327640# method, (whereby you go into the service mode, turn off the PERSHO_256 and then INITIALLIZ).
I tried this method and the phone then seemed to work with my telus sim, but only for voice, not data. When I put in a Bell SIM from a friend, both voice and data worked fine - which tells me its not a hardware (radio) issue. I also tried using another friends Telus SIM and had the same results as mine - which tells me it's not a SIM error. Also, all the settings in the mobile network area appeared to be correctly set up.
So, my next step was to try and reflash the phone to the stock Bell ROM and then just buy an Unlock code. I downloaded the stock ROM (2 different ones actually) and used Odin 3.07 to reload the ROM. I've tried it several times now, with both Bell ROMs and each time it says it's been successful, but the phone remains in the same, partially unlocked state.
It seems as though by using the PERSHO_256 method I have permanently, PARTIALLY unlocked the phone. I can't seem to re-lock it by installing the stock Bell ROM, and since it's unlocked, I can't get the foreign SIM error to come up to enable me to put in my purchased unlock code.
If anyone has any insights, it would be GREATLY appreciated. Thanks!
-Luke
did you check and/or setup the apn? it may be just the apn is not set correctly or you have to manually input hte apn
sounds like just APN needs setting...
APN?
How would I check/setup the APN? Is this to allow me to do a full reflash to a stock ROM or to access data with the phone in it's current state?
left ownsho
So I went into ACCES POINT NAMES and checked the sp.telus.net box, no change. Did a restart. No change Any ideas?
Wooooo Hooooo!!!
So, it's working now!!! I dug a little deeper and found the correct APN settings for TELUS. NOW IT F*@^&#*&@ING WORKS!
Thanks so much for pointing me in the right direction!!!
I'll try to be brief. lol .Before finding this site I brought my unlocked S4 mini to wind to see if it will work. The guy found the 1700 freq in the phone service menu and changed something and said it won't keep on 1700 then he said something about the nv write. After a while he handed it back and said it wouldn't work. I put my bell sim in afterward it said no sim. it won't find any bell sim now. I tried a friends telus sim and it finds the sim fine and shows voicemail notifications but when I tried to call it says not connected to network. I can see the networks but when trying to connect, the signal drops and phone says "network not available try later". After it tries to connect the signal returns to normal.
So I found this site
I successfully rooted the phone with S4Mini_RootKit_v2.zip. It worked fine but had the same network problem. I fully rooted with cm11, then 12. Same problem.
I loaded a pit file gotten gaciously from sammobile. Same problem
I've returned all firmware to factory and undone root but still same issue.
The imei and serial number match the sticker on the back so they are not invalid.
The wifi and bluetooth and general operations are normal.
I'm guessing that the nv was rewritten and to recovery as well? But I really don't know as I am very new at this but have been doing a lot of reading.
1. Is there a way to restore the nv without a backup from my phone?
2. Is there a way to restore the service programming back to factory default? (I've seen this question asked before but only found the answer it is proprietory, whatever that means)
I have qpst and efs professional and a qcn file I was able to download from the internet
3. This qcn file is from unreliable source. Could I damage my phone more than it already is, and can i edit my imei and sn into it?
Thanks very much.
Manually edited
Miniwish said:
I'll try to be brief. lol .Before finding this site I brought my unlocked S4 mini to wind to see if it will work. The guy found the 1700 freq in the phone service menu and changed something and said it won't keep on 1700 then he said something about the nv write. After a while he handed it back and said it wouldn't work. I put my bell sim in afterward it said no sim. it won't find any bell sim now. I tried a friends telus sim and it finds the sim fine and shows voicemail notifications but when I tried to call it says not connected to network. I can see the networks but when trying to connect, the signal drops and phone says "network not available try later". After it tries to connect the signal returns to normal.
So I found this site
I successfully rooted the phone with S4Mini_RootKit_v2.zip. It worked fine but had the same network problem. I fully rooted with cm11, then 12. Same problem.
I loaded a pit file gotten gaciously from sammobile. Same problem
I've returned all firmware to factory and undone root but still same issue.
The imei and serial number match the sticker on the back so they are not invalid.
The wifi and bluetooth and general operations are normal.
I'm guessing that the nv was rewritten and to recovery as well? But I really don't know as I am very new at this but have been doing a lot of reading.
1. Is there a way to restore the nv without a backup from my phone?
2. Is there a way to restore the service programming back to factory default? (I've seen this question asked before but only found the answer it is proprietory, whatever that means)
I have qpst and efs professional and a qcn file I was able to download from the internet
3. This qcn file is from unreliable source. Could I damage my phone more than it already is, and can i edit my imei and sn into it?
Thanks very much.
Click to expand...
Click to collapse
I painstakingly manually edited using qpst and restored all changed setting to a previous copied save.
Standard device, running 4.4.2, not rooted or changed other than by downloads provided by KIES, originally on 3 Ireland network, was unlocked and moved to Vodafone over 12 months ago with no issue, using unlock code provided by 3 after the end of contract period was reached.
Had a few strange issues recently but nothing I could be sure of, then one night this week, the phone locked and would not accept any key presses. Removed battery to force power down, then restarted, which has always worked in the past on the rare occasions when this has happened, but this time, when it restarted, it asked for a Sim Network Unlock PIN, which at the time I didn't recognise as being the unlock code supplied by 3.
I don't know if there are issues about the number of times this code can be entered, if there are, due to all sort of errors by Vodafone Support, that limit has probably been exceeded.
The other possibility is that a hardware issue has developed, but as it is only the phone network won't work, my instinct is telling me that this is a software and security issue that may have been triggered by too many failed unlock requests, though it still asks for an unlock code on power up.
So, what have I tried. After several frustrating calls with Vodafone and Samsung support failed to resolve the issue, I dismissed the PIN request and made sure I had some backups of things like Contacts, which worked, so the phone can communicate via USB, and it's also working with no issues via WiFi networking, as I can access things like Facebook via WiFi. My Google account is also working, it's downloaded and updated the applications that are installed on the phone,
In the absence of any real assistance from Vodafone or Samsung, in desperation, I've tried a factory reset, and also tried wiping the cache, but neither of these options are getting rid of the Unlock Sim request, which suggests to me that there is a flag or code somewhere deep in the system that's not allowing a full reset, and that may be related to too many failed Network PIN Entries.
Can I recover this phone, or am I better to just abandon it and get a replacement device, which in all honesty I don't need, the Note II is doing all I need at the moment, and a replacement is going to be an expense I'd rather not have to commit to right now.
I have all the details of the versions, IMEI etc, they are all accessible from within the phone using various *# codes, and they all are still correct and match what they should.
Talking to a local repair shop, if they ask for an unlock code, they are saying that the code they get will be the same as the one I already have received from 3, and as that seems to be not working, they are saying there's no point getting a code from them.
So, where do I go from here? Somehow, I think I need to find a way to wipe everything in the phone, and then reset the IMEI to the correct value, which should in theory allow the device to work again, and recognise the unlock code. That's a lot more than I've done on a phone, I'm computer literate, but not Android and phone experienced, so a lot of the buzz words are not familiar, or mean different things to what I've been used to on other systems.
If I am going to be completely wiping it all, is there any way I can change the service provider to get rid of the issues with the network unlock code, or is that asking for more aggravations?
Thanks in anticipation.
There is a free method that can be used to sim unlock the sgh-i317m which is the North American version of the Note 2. You had to flash back to a stock 4.1.1 ROM, and follow this guide: https://forum.xda-developers.com/showthread.php?t=2014982
The 4.1.1 ROM for the sgh-i317m Note 2 from sammobile.com does not include the 4.1.1 bootloader which is why the downgrade from stock 4.4.2 to 4.1.1 works.
I have a att note 10+ that I sim unlocked it will take a Verizon sim and work 100% but it will not work with straight talk i have no service can't call text and no data every once in awhile a text will get thru but can anyone help me with this I can't root because I can't oem unlock unless there is another way any help would be appreciated
ackaite said:
I have a att note 10+ that I sim unlocked it will take a Verizon sim and work 100% but it will not work with straight talk i have no service can't call text and no data every once in awhile a text will get thru but can anyone help me with this I can't root because I can't oem unlock unless there is another way any help would be appreciated
Click to expand...
Click to collapse
Did you set the APN information correctly?
Also are you using the N975U1 firmware or the standard AT&T firmware?
Are you using the BYOD sim card from straight talk?
What have you done over the phone with Straight Talk as far as troubleshooting? - this one can be important. If the phone isn't working with straight talk only it maybe a configuration (apn setting) or provisioning issue.
Are you sure the device is compatible with the area or region your in?
What provider/tower (Verizon, AT&T, etc.) does straight talk have you going through?
More information on what you have done to setup the phone for straight talk, troubleshooting steps you have taken, what information straight talk may have provided (etc. etc.) will help others be able to help you. Providing little or no details makes it rather hard to offer any help.
The apn won't let me put dun in the type I sim unlocked it with a puk code and got strighttalk byop I tried flashing the U1 firmware to it wouldn't take it so I did a Verizon firmware thinking that might help and same thing with the striaght talk it doesn't wanna work i put a Verizon sim in it and it works just like it did on ATT so I'm confused as to why the straight talk sim won't work they can't figure it out on their end either
I factory reset the phone reset network settings did just about everything I could with the phone besides it being funny about the apn cuz it says apn cannot be changed on this device if you put dun in the apn type i dunno the only thing I notice is when the Verizon sim card is in the phone the network mode is set to global whereas with the striaght talk its LTE/CDMA and it won't let you change it to global
ackaite said:
The apn won't let me put dun in the type I sim unlocked it with a puk code and got strighttalk byop I tried flashing the U1 firmware to it wouldn't take it so I did a Verizon firmware thinking that might help and same thing with the striaght talk it doesn't wanna work i put a Verizon sim in it and it works just like it did on ATT so I'm confused as to why the straight talk sim won't work they can't figure it out on their end either
Click to expand...
Click to collapse
Straight Talk uses different mobile providers to offer service different areas.. They utilize Verizon, AT&T, Sprint and T-Mobile (Sprint and T-Mobile have merged recently, but Sprint towers are still active).
I have seen posts across the internet that indicate you should be using the U1 firmware on the phone.. I would make sure your converting the phone to the U1 firmware properly.
If I recall correctly (this is how I did it previously) when flashing the U1 firmware make sure your doing it without the sim card installed and using the non home_csc file. Factory data reset the phone after you successfully flash the U1 firmware and then insert the sim card after setting the phone back up (so it can apply the new sim/network settings).
I would strongly suggest you do not restore a backup during initial setup when you do this. If you restore a backup it may restore previous network settings/configurations that were for what you had previously.
If flashing U1 firmware doesn't help (and since this this is a Straight Talk specific issue) then it's more then likely on the end of Straight Talk. I would call them and make sure that your sim card is the correct one for the cell towers they have you going through and the phone you have. Using an incompatible sim card (or one that is faulty) can cause issues like this. You can also have them send you another sim card to try.
Also contact them to make sure the service is properly provisioned and activated on your phone. Double check the APN with them, and see if they have an alternative one to try. It is also possible that a service outage maybe (or issue with Straight Talk internally) in your area, so I would call them to make sure that neither are not the case here.
ackaite said:
I factory reset the phone reset network settings did just about everything I could with the phone besides it being funny about the apn cuz it says apn cannot be changed on this device if you put dun in the apn type i dunno the only thing I notice is when the Verizon sim card is in the phone the network mode is set to global whereas with the striaght talk its LTE/CDMA and it won't let you change it to global
Click to expand...
Click to collapse
The Global setting doesn't really matter in this case and your phone will be set to use the towers that Straight Talk has you going through.
The only thing that I can think of that would be a problem with network mode is if your sim card from straight talk is meant for a different provider then the towers they use in your area (i.e. sim card is for AT&T but the provider they have for the area is Sprint).
the straight Talk sim works in other phones no problem a s8 and a older note im thinking att has something in the software to block other apns i dunno i unlocked it with a PUK code and flashed verizon firmware on it thinking i could get passed it but the verizon sim works 100% and the att sim works 100% too but a straighttalk sim card (verizon) towers the phone tries it shows 4g and disappears and then it shows it has service but cant call it just says emergency calls only
ackaite said:
the straight Talk sim works in other phones no problem a s8 and a older note
Click to expand...
Click to collapse
I would not use older phones as a means to say the sim card is good. Besides that's irrelevant to what is going on with the Note 10+
ackaite said:
im thinking att has something in the software to block other apns
Click to expand...
Click to collapse
Then this means one of two things... Either you didn't get the phone unlocked or else you did not convert to another carrier (or the U1 firmware XAA region) correctly.
If your using the unlocked firmware (U1 XAA region) then you should be able to edit the APN. If not then you should be able to create one.
ackaite said:
i dunno i unlocked it with a PUK code and flashed verizon firmware on it thinking i could get passed it but the verizon sim works 100% and the att sim works 100% too but a straighttalk sim card (verizon) towers the phone tries it shows 4g and disappears and then it shows it has service but cant call it just says emergency calls only
Click to expand...
Click to collapse
That sounds like either the sim card isn't good, the phone was not activated/provisioned properly in there systems (call them and double check IMEI and model information), the phone is not compatible with the service they offer in your area (I suggest using the XAA region U1 firmware in this case) or else your phone is not fully unlocked.
I would also suggest google searching or else asking them for any updated or alternative APN's to try. It maybe very likely the one you have is not suitable for the phone/area... It wouldn't be the first time I have had an issue similar to this like this.
I am opt to believe the first 3 are the most likely scenarios since the phone works on Verzion with the sim card per your indication.
Yeah and the only reason I tried the older phone is to see if the sim card is activate with the number and the phone itself pulled the apn from network when I tried to flash to U1 the phone gave me a error but it took the Verizon firmware for the 975U but its still not working do you know of a good link for the firmware your talking about so I can try that
ackaite said:
Yeah and the only reason I tried the older phone is to see if the sim card is activate with the number and the phone itself pulled the apn from network
Click to expand...
Click to collapse
From personal experience I would advise in the future you don't do that. When you activate the phone you should activate the one you are using and definitely do not use an older phone to activate a newer phone. I have had many problems with this in the past as provisioning for an older phone didn't always work for my newer ones..
ackaite said:
when I tried to flash to U1 the phone gave me a error but it took the Verizon firmware for the 975U but its still not working do you know of a good link for the firmware your talking about so I can try that
Click to expand...
Click to collapse
I waited for you to give more information on the issue, but you didn't. So I am sorry, but if you don't provide the details of what is going on it makes helping you very difficult. You didn't say what error you are getting, what the firmware version(s) are of what your trying to flash and what is currently on the phone.
Here's the last piece of help I can offer now.
I can tell you that the following can be found on the forum by searching:
Links and how to obtain the firmware - Multiple threads asking the same question exist here. Also Frija, SamFirm, SamMobile are just a few examples of what can be found referenced here.
Bootloader version(s) - what will happen when you try to downgrade and what will happen (along with a important thing) when you upgrade.
Websites to find firmware - SamMobile and some others have been mentioned.
Patched Odin - In case you need the latest version it has been mentioned here already.
I can also tell you that by using Google and searching for SM-975U1 XAA on Sammobile does in fact work.
Brother give me root file for note 10 plus SM-N975U android 10 version one Ul version 2.5 plz help me
I switched my carrier from Verizon to PureTalk. Verizon says my phone is unlocked, even when they try to unlock my phone it gives them the pin of 00000000. I still get the notification of "SIM card is not from Verizon Wireless". I am at a loss as to how to fix this, I had to edit the APN to allow me to have data & MMS. everything seams to be working as of right now, except the phone gives me that message and I get the Verizon splash screen and of coarse all of the bloatware! I am looking into doing a firmware install, however, I'm not sure which is the correct one and unsure if this will fix the message. I have downloaded the latest firmware labeled as USA/USC from SAMMOBILE - Firmware.
I want to make sure moving to this firmware would resolve this message before I attempt it or if there is something I need to do before moving to a new firmware!
Any help is much appreciated!