Develop Bugs

Newbie need help linking S9 to current country

Hi Have s9 G960F in service provide SW ver TEL/TEL/TEL - i beleive austalian telestra,
not getting any OTA updates - currently in Israel
tried google and search on forum, not found something 100% clear
Question 1 : is there any way without flashing new FW via odin to get OTA updates? (vpn, australian sim, fake location and etc...)
Question 2: if answer to question 1 is no, where to get stock Israel FW for G960F , and what is the best option for backup and restore
Thanks!

What is your current SW? According to sammobile the latest build is the BRJ6 (https://www.sammobile.com/firmwares/galaxy-s9/SM-G960F/TEL/download/G960FXXS2BRJ6/246171/) if this one matches your current SW then there's no way you can get another udpate until, I assume Telestra is an Australian carrier, they release it...

Infinitodecimal said:
What is your current SW? According to sammobile the latest build is the BRJ6 (https://www.sammobile.com/firmwares/galaxy-s9/SM-G960F/TEL/download/G960FXXS2BRJ6/246171/) if this one matches your current SW then there's no way you can get another udpate until, I assume Telestra is an Australian carrier, they release it...
Click to expand...
Click to collapse
so when Telestra will release s9 update this s9 will get it as well? even if phone in another country and have non-Telesra sim installed?

lol2k said:
so when Telestra will release s9 update this s9 will get it as well? even if phone in another country and have non-Telesra sim installed?
Click to expand...
Click to collapse
In theory yes, but if you don't and they release a newer SW, you can just flash it iva Odin, don't it won't trip a thing nor void your warranty

Infinitodecimal said:
In theory yes, but if you don't and they release a newer SW, you can just flash it iva Odin, don't it won't trip a thing nor void your warranty
Click to expand...
Click to collapse
aware of odin option , but aything that doesnt requeire backup and restore is preffered
thanks a lot guys!

lol2k said:
aware of odin option , but aything that doesnt requeire backup and restore is preffered
thanks a lot guys!
Click to expand...
Click to collapse
As long as you flash the HOME_CSC you won't lose anything...

Infinitodecimal said:
As long as you flash the HOME_CSC you won't lose anything...
Click to expand...
Click to collapse
thats amazing, didnt knew there such an option
it also saves all of the apps data?
still what are the best backup option if things goes wrong?
it may be dual sim modle, how do i check? if yes, special firmware needed?

lol2k said:
thats amazing, didnt knew there such an option
it also saves all of the apps data?
still what are the best backup option if things goes wrong?
it may be dual sim modle, how do i check? if yes, special firmware needed?
Click to expand...
Click to collapse
My best option ALWAYS is Smartswitch, either for backup or SW update, if there's a new SW, Smartswitch downloads and installs it right away

seems telstra rolled out pie update
nothing in the phone, last update june2018
any last ideas before uing odin? maybe get australian sim card?
csc g960foxm1brf7 linked to australian telstra - not really should what to install as well

Infinitodecimal said:
My best option ALWAYS is Smartswitch, either for backup or SW update, if there's a new SW, Smartswitch downloads and installs it right away
Click to expand...
Click to collapse
hi mate , still here? can you check if you can help with my last reply please?

lol2k said:
hi mate , still here? can you check if you can help with my last reply please?
Click to expand...
Click to collapse
Odin the F out of that phone, remember home_csc not the csc :good::good:

Infinitodecimal said:
Odin the F out of that phone, remember home_csc not the csc :good::good:
Click to expand...
Click to collapse
not really understood the csc part
but if i have model sm-g960f
this will fit for sure? https://www.sammobile.com/firmwares/galaxy-s9/SM-G960F/ILO/download/G960FXXU2CRLN/250936/
or anything else i should check before re flashing besides model?

lol2k said:
not really understood the csc part
but if i have model sm-g960f
this will fit for sure? https://www.sammobile.com/firmwares/galaxy-s9/SM-G960F/ILO/download/G960FXXU2CRLN/250936/
or anything else i should check before re flashing besides model?
Click to expand...
Click to collapse
First, the csc is wrong, the link you posted is for Israel, not Australia, and second, once you downloaded the file, unzip it: once it's done you'll have 5 files(as you can see in the picture): AP, BL, CP AND 2 CSC home_ (that one won't erase a thing) and the csc (this one will format your phone)

Infinitodecimal said:
First, the csc is wrong, the link you posted is for Israel, not Australia, and second, once you downloaded the file, unzip it: once it's done you'll have 5 files(as you can see in the picture): AP, BL, CP AND 2 CSC home_ (that one won't erase a thing) and the csc (this one will format your phone)
Click to expand...
Click to collapse
i want Israeli FW on this phone, is it possible?

lol2k said:
i want Israeli FW on this phone, is it possible?
Click to expand...
Click to collapse
Technically you can

hi! can somebody tell me about compatibility between s9 variants? i have an G9600 and i want to install Pie. Which variant can i flash? the 960N? 960F? 960u?
thanks a lot

Infinitodecimal said:
Technically you can
Click to expand...
Click to collapse
so just download and flash?

lol2k said:
so just download and flash?
Click to expand...
Click to collapse
yup

Flashed Combo Bin5 G960U on G960U1 ( need Combo Binary 5 G960U1 to Revert mistake )

Hi Lads
I flashed G960U bin 5 combo to a G960U1
The combo firmware i get a full signal bars (G960u Bin5 Firmware) but when i flash any full Bin 5 firmware G960U .
The phone boots fine all good. but when i insert sim card it asks to restart
When it restarts phone says no siim card and no signal
If i flash combo again i get full signal
cant locate any G960U1 binary 5 firmware anywhere
A few dodgy paid websites claim to have COMBINATION_FAC_FA80_G960U1SQU5ASE1
also tried 5 different G960U Binary 5 from sammobile but still no signal
any help
Thanks

datto666 said:
Hi Lads
I flashed G960U bin 5 combo to a G960U1
The combo firmware i get a full signal bars (G960u Bin5 Firmware) but when i flash any full Bin 5 firmware G960U .
The phone boots fine all good. but when i insert sim card it asks to restart
When it restarts phone says no siim card and no signal
If i flash combo again i get full signal
cant locate any G960U1 binary 5 firmware anywhere
A few dodgy paid websites claim to have COMBINATION_FAC_FA80_G960U1SQU5ASE1
also tried 5 different G960U Binary 5 from sammobile but still no signal
any help
Thanks
Click to expand...
Click to collapse
have you looked on www.sammobile.com/firmwares ?

youdoofus said:
have you looked on www.sammobile.com/firmwares ?
Click to expand...
Click to collapse
No version 5 for the G960U1 yet...

*Detection* said:
No version 5 for the G960U1 yet...
Click to expand...
Click to collapse
yeah, i also missed his last line stating that he had looked there. maybe the firmware download tool will have it in its armory. pretty sure that just pulls from sammobile, but maybe it has sources from other ip's

youdoofus said:
yeah, i also missed his last line stating that he had looked there. maybe the firmware download tool will have it in its armory. pretty sure that just pulls from sammobile, but maybe it has sources from other ip's
Click to expand...
Click to collapse
Those tools DL direct from Samsung's servers not sammobile, Sammobile just grabs them and ups them to their own server to make money from premium DL links, they're nothing to do with Samsung, and in fact even linking SM on XDA was (If it is not still) at one time against rules, same with another premium link host I forget the name of now

*Detection* said:
Those tools DL direct from Samsung's servers not sammobile, Sammobile just grabs them and ups them to their own server to make money from premium DL links, they're nothing to do with Samsung, and in fact even linking SM on XDA was (If it is not still) at one time against rules, same with another premium link host I forget the name of now
Click to expand...
Click to collapse
right on. thanks. not at all trying to break the rules of this forum by posting the link to that site. ive also suggested the idoneapps.com site to folks, but only under the pretense of it being a paid services site and to use at their own discretion.
do you have a link handy for that firmware DL tool? Maybe thatll help the OP

youdoofus said:
right on. thanks. not at all trying to break the rules of this forum by posting the link to that site. ive also suggested the idoneapps.com site to folks, but only under the pretense of it being a paid services site and to use at their own discretion.
do you have a link handy for that firmware DL tool? Maybe thatll help the OP
Click to expand...
Click to collapse
If it's not on Sammobile yet it'll not be on Samsungs servers yet either, they are s**t hot at getting their links up as soon as it is available, plus the last update for the G960U1 was back in April, and seems to have been monthly up until then, then suddenly nothing for some reason
Frija DL Tool
https://forum.xda-developers.com/galaxy-s9/how-to/tool-frija-samsung-firmware-downloader-t3910584
SamFirm Tool
https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
---------- Post added at 16:30 ---------- Previous post was at 16:26 ----------
@OP - If the phone is requesting you to restart once you insert the SIM, that sounds as if you are flashing the wrong CSC (Region) for your SIM, SIM determines which CSC the phone receives so long as it is included in the Multi_CSC you have flashed and will prompt a restart to change CSC
ie: OXM contains XEU and DBT and dozens of others, if I insert a UK SIM it will default to XEU or BTU, if I insert a German SIM it will revert to DBT
Leave your SIM in when you flash, and flash a region your SIM is from, (maybe) some CSC restriction issue not supporting the SIMs/carriers bands (Total guess)

*Detection* said:
If it's not on Sammobile yet it'll not be on Samsungs servers yet either, they are s**t hot at getting their links up as soon as it is available, plus the last update for the G960U1 was back in April, and seems to have been monthly up until then, then suddenly nothing for some reason
Frija DL Tool
https://forum.xda-developers.com/galaxy-s9/how-to/tool-frija-samsung-firmware-downloader-t3910584
SamFirm Tool
https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
---------- Post added at 16:30 ---------- Previous post was at 16:26 ----------
@OP - If the phone is requesting you to restart once you insert the SIM, that sounds as if you are flashing the wrong CSC (Region) for your SIM, SIM determines which CSC the phone receives so long as it is included in the Multi_CSC you have flashed and will prompt a restart to change CSC
ie: OXM contains XEU and DBT and dozens of others, if I insert a UK SIM it will default to XEU or BTU, if I insert a German SIM it will revert to DBT
Leave your SIM in when you flash, and flash a region your SIM is from, (maybe) some modem issue not supporting the SIMs/carriers bands (Total guess)
Click to expand...
Click to collapse
id say its a good guess actually. I got an A8 that was intended for the UAE market and i flashed the Russian, German and UK firmwares with the SIM in it, and it worked just fine here in the good ol US of A
also, thank you for those links! those tools rock!

youdoofus said:
id say its a good guess actually. I got an A8 that was intended for the UAE market and i flashed the Russian, German and UK firmwares with the SIM in it, and it worked just fine here in the good ol US of A
Click to expand...
Click to collapse
Yea they should work fine, only places I can see it causing an issue is where there are tight restrictions/regulations, like for example the CSC determines which features your phone can and cannot use, Call Recording is a good example, you can enable it by modifying those restrictions or flashing a CSC from a region it is allowed, the phone/firmware is completely capable it is just disabled

Cricket S9

Im wanting to de-Cricket my S9
Its a G960U, so i assume that all i would really need to do is flash the U1 firmware, correct?
and if that is correct, it will give me a Sammy splash screen and boot animation too, yes? Perhaps some sophomoric questions, but im just making sure.
@*Detection*

youdoofus said:
Im wanting to de-Cricket my S9
Its a G960U, so i assume that all i would really need to do is flash the U1 firmware, correct?
and if that is correct, it will give me a Sammy splash screen and boot animation too, yes? Perhaps some sophomoric questions, but im just making sure.
@*Detection*
Click to expand...
Click to collapse
Yep that's right, it will remove all the carrier crap (I assume splash, definitely boot), just remember about the bootloader/baseband versions that cannot be downgraded so if you flash to version 4 you can only flash v4 or above after that
You will also receive updates direct from Samsung instead of the carrier

*Detection* said:
Yep that's right, it will remove all the carrier crap (I assume splash, definitely boot), just remember about the bootloader/baseband versions that cannot be downgraded so if you flash to version 4 you can only flash v4 or above after that
You will also receive updates direct from Samsung instead of the carrier
Click to expand...
Click to collapse
thank you! im running G960USQS5CSEA
does that S5 mean that im running revision 5?

youdoofus said:
thank you! im running G960USQS5CSEA
does that S5 mean that im running revision 5?
Click to expand...
Click to collapse
Yea, version number is here
G960USQ>>S5<<CSEA
So as the U1 firmwares are all stuck on version 4 you cannot flash them right now

*Detection* said:
Yea, version number is here
G960USQ>>S5<<CSEA
So as the U1 firmwares are all stuck on version 4 you cannot flash them right now
Click to expand...
Click to collapse
damnit. thats just my luck too :/ thank you for affirming my understanding of how this works. I came to the S9 recently but i do recall the odin flash process for the t-mobile S2's that required the individual files to be placed in Odin before flashing, so this is all old hat as far as the process goes. Any idea on how long it might be before the U1 firmwares are going to be available for V5?

youdoofus said:
damnit. thats just my luck too :/ thank you for affirming my understanding of how this works. I came to the S9 recently but i do recall the odin flash process for the t-mobile S2's that required the individual files to be placed in Odin before flashing, so this is all old hat as far as the process goes. Any idea on how long it might be before the U1 firmwares are going to be available for V5?
Click to expand...
Click to collapse
Only Samsung knows, but a lot of firmwares are now on v5 so if I had to guess I'd say the next update probably will bump it up to v5, they said the security updates included in the June update required it to be updated
When it receives the next update is anyone's guess though
And yes, all 4 parts of the firmware to be flashed together in the corresponding ODIN sections, HOME_CSC will not reset the phone, CSC will reset it, use one or the other in the CSC section

*Detection* said:
Only Samsung knows, but a lot of firmwares are now on v5 so if I had to guess I'd say the next update probably will bump it up to v5, they said the security updates included in the June update required it to be updated
When it receives the next update is anyone's guess though
And yes, all 4 parts of the firmware to be flashed together in the corresponding ODIN sections, HOME_CSC will not reset the phone, CSC will reset it, use one or the other in the CSC section
Click to expand...
Click to collapse
good stuff man! thanks again! can you get a mod to make a sticky with those firmware download tools? i think that would be VERY helpful for tons of folks

youdoofus said:
good stuff man! thanks again! can you get a mod to make a sticky with those firmware download tools? i think that would be VERY helpful for tons of folks
Click to expand...
Click to collapse
Creators of the tools would have to request that, they're easy enough to find with Google if you search "samsung firmware download tools xda" top results have both of the tools

*Detection* said:
Creators of the tools would have to request that, they're easy enough to find with Google if you search "samsung firmware download tools xda" top results have both of the tools
Click to expand...
Click to collapse
understood. good show then chap!

*Detection* said:
Creators of the tools would have to request that, they're easy enough to find with Google if you search "samsung firmware download tools xda" top results have both of the tools
Click to expand...
Click to collapse
would this firmware work with the 5th bootloader revision?
https://www.sammobile.com/samsung/galaxy-s9/firmware/SM-G960U1/ATT/download/G960U1UEU5CSF1/279154/

@*Detection*
would that version work? it seems like it would

well, i got it to work @*Detection*
the download in this link got it, well, that and the patched Odin i needed to get around the E255 error i kept getting.
https://www.sammobile.com/samsung/galaxy-s9/firmware/SM-G960U1/ATT/download/G960U1UEU5CSF1/279154/

Samsung Galaxy s9 Demo Security Error

Hello! This is my first post on any forum ever, so please be gentle.
Recently I dumpster dove behind a U.S. Cellular that had just gone out of business and I found this neat Samsung Galaxy S9 Live Demo phone. It was originally flashed with an SM-G960XU Firmware, but I wanted to de-demo mode it, so I thought I would flash an SM-G960U firmware on it instead.
This failed miserably and I now have the following error: "Security Error: This phone has been flashed with unauthorized software...". A picture of the error, as well as the other information I have been able to glean from the locked phone is attached.
Unfortunately, I knew nothing about androids before attempting to flash the phone, so I have no other data about the phone other than what is in the pictures.
Any help would be greatly appreciated.
Thank you very much,
Oronto

Meh... you have a parts queen, less the mobo.

Demo unit should be missing the baseband chip hardware inside, so even if you could flash the stock firmware you would be limited to using it with wifi.
Apart from that, what happens if you try to flash again with odin? i would try flashing the precedent firmware G960XU

effry said:
Demo unit should be missing the baseband chip hardware inside, so even if you could flash the stock firmware you would be limited to using it with wifi.
Apart from that, what happens if you try to flash again with odin? i would try flashing the precedent firmware G960XU
Click to expand...
Click to collapse
Hi effry,
Thank you for your response. I would love to reflash it with its original firmware but I can’t find it anywhere on the internet! I did not realize I was supposed to back up the firmware before flashing it which was quite the mistake. Do you happen to know where I might be able to find this firmware?
Thank you very much,
Oronto

Start from here and check the exact phone model with the IMEI, it is printed on the bottom of the back of the phone (use a strong light, it's a small and light text)
Check Samsung IMEI information in SamFw.com
You can check Samsung IMEI information like Model, Region. And you can choose the exact firmware
samfw.com
After that you can use the same site to search for the correct firmware , donwload it and flash it with Odin

blackhawk said:
Meh... you have a parts queen, less the mobo.
Click to expand...
Click to collapse
Hi Blackhawk,
Thanks for the response. What do you mean by a parts queen? Do you mean I should sell it for parts on eBay?
Thanks,
Oronto

Oronto said:
Hi Blackhawk,
Thanks for the response. What do you mean by a parts queen? Do you mean I should sell it for parts on eBay?
Thanks,
Oronto
Click to expand...
Click to collapse
A hangar queen is the actual terminology. An aircraft used for donor parts to keep others flying.
The display, frame, battery, C port pcb, cam module should be good. The mobo is useless for use as a phone except as noted with wifi.
So if you have another phone of the same model... you now have an Android queen

effry said:
Start from here and check the exact phone model with the IMEI, it is printed on the bottom of the back of the phone (use a strong light, it's a small and light text)
Check Samsung IMEI information in SamFw.com
You can check Samsung IMEI information like Model, Region. And you can choose the exact firmware
samfw.com
After that you can use the same site to search for the correct firmware , donwload it and flash it with Odin
Click to expand...
Click to collapse
Hi effry,
Thank you again! I input the model’s serial number into the website you linked and it returned that the firmware is SM-G960XZKUXAR. Unfortunately, that website doesn’t have the firmware that it tells me the phone is supposed to have. I checked elsewhere on the internet but I can’t seem to find it. Is there an obscure website you know of that might have it?
Alternatively, do you think it is possible that I could flash it with another equivalent firmware? If so, what might you suggest?
Thank you very much,
Oronto

blackhawk said:
A hangar queen is the actual terminology. An aircraft used for donor parts to keep others flying.
The display, frame, battery, C port pcb, cam module should be good. The mobo is useless for use as a phone except as noted with wifi.
So if you have another phone of the same model... you now have an Android queen
Click to expand...
Click to collapse
Hi blackhawk,
Thank you for your insight into which parts seem useful for scrapping. It is looking like I might have to do that. Unfortunately, I do not have an equivalent model, so I will have to sell it for parts if it comes down to that.
Thanks again,
Oronto

Oronto said:
Hi effry,
Thank you again! I input the model’s serial number into the website you linked and it returned that the firmware is SM-G960XZKUXAR. Unfortunately, that website doesn’t have the firmware that it tells me the phone is supposed to have. I checked elsewhere on the internet but I can’t seem to find it. Is there an obscure website you know of that might have it?
Alternatively, do you think it is possible that I could flash it with another equivalent firmware? If so, what might you suggest?
Thank you very much,
Oronto
Click to expand...
Click to collapse
By looking online it seems that flashing the firmware with odin should fix the issue. Maybe you did something wrong in the process? i would try another odin flash using this firmware
Download Galaxy S9 SM-G960U (XAS) G960USQS9FUG2 in Samfw - Samsung firmware download
Galaxy S9 SM-G960U (XAS - United States) G960USQS9FUG2 Q(Android 10) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com

If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com

effry said:
If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com
Click to expand...
Click to collapse
Hi effry,
Thank you very much for all of these options! I will try them all when I get home and let you know if I have any success.
Thanks again,
Oronto

effry said:
If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com
Click to expand...
Click to collapse
Hello again effry,
I tried your firmwares and bad things have happened. It got to where the download was almost finished and then it displayed this error. Unfortunately Smart Switch Emergency Software Recovery does not register it as connected.
I believe I am boned. Thoughts on this?
Thanks,
Oronto

Oronto said:
Hello again effry,
I tried your firmwares and bad things have happened. It got to where the download was almost finished and then it displayed this error. Unfortunately Smart Switch Emergency Software Recovery does not register it as connected.
I believe I am boned. Thoughts on this?
Thanks,
Oronto
Click to expand...
Click to collapse
You could just replace the motherboard from Ebay for around 50 bucks (USD). Make sure it's a regular unlocked version (both FRP and network), any carrier will do since you can cross flash any firmware of your choice (no need for the demo anymore). Just a heads up, demo units sometimes are missing some of the LTE antenna cables/connectors, which would prevent the good replacement main board from working on cellular.

billa said:
You could just replace the motherboard from Ebay for around 50 bucks (USD). Make sure it's a regular unlocked version (both FRP and network), any carrier will do since you can cross flash any firmware of your choice (no need for the demo anymore). Just a heads up, demo units sometimes are missing some of the LTE antenna cables/connectors, which would prevent the good replacement main board from working on cellular.
Click to expand...
Click to collapse
Hi billa,
Thanks for the advice. I’ll look into it, but I might end up just selling it for parts.
Thanks,
Oronto

Tried to flash G988W firmware onto my G988U1 phone. SIM card not recognized

I live in Canada. I purchased an S20 Ultra off a seller on Canadian best buy (open box). I assumed it'd be a Canadian variant, but it was an unlocked US version (U1 firmware). OK whatever, but it meant my Samsung Pay doesn't work, along with a few other calling features.
I downloaded the patched Odin, downloaded the G988W firmware (with XAC CSC) with Frija, added the appropriate files to Odin (used Home CSC), and flashed it. The flashing itself went fine, but when I went to re-insert my SIM...nothing. It didn't even error out and say "No SIM Detected", I just had no coverage, and in SIM manager, both slots were empty.
Freaked out, and eventually flashed back to G988U1/XAA and thank Christ it works now. But my question is...why?
I dug though this forum before doing it to try and anticipate any issues. Followed the instructions to the letter, nowhere said this would be an issue. Couldn't even find any relevant support questions for this issue on this model. Not sure if it's a new development, but I absolutely don't want to risk messing my phone up further if I reattempt.
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?

You can't just flash a firmware from a different phone. The hardware is different, so the way to communicate with it is different. You're lucky it even booted, I wouldn't have expected that even. You're simply stuck with the original firmware and CSC list. Or, maybe you could try with custom ROMS but I wouldn't be so sure about it. Either way, you'll have to use a ROM/firmware that is built for your phone (G988U1).

Mwyann said:
You can't just flash a firmware from a different phone. The hardware is different, so the way to communicate with it is different. You're lucky it even booted, I wouldn't have expected that even. You're simply stuck with the original firmware and CSC list. Or, maybe you could try with custom ROMS but I wouldn't be so sure about it. Either way, you'll have to use a ROM/firmware that is built for your phone (G988U1).
Click to expand...
Click to collapse
Huh I thought the actual hardware between U1 and W was the same? They're both Snapdragons. Besides I've seen other posts of people doing the same (tbh, they were going from W to U1, but still)

Mwyann said:
You can't just flash a firmware from a different phone.
Click to expand...
Click to collapse
Oh but you CAN.
U, U1, and W have all been cross-flashable ever since Samsung first introduced universal hardware, starting with the S8

Jetrel1 said:
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?
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Probably. Very common for online sellers to do.
The key probably lies in what the CSC shows as after flashing W firmware. If it stays as XAA, changing the CSC manually to a Canadian one could possibly make it work

iBowToAndroid said:
Oh but you CAN.
U, U1, and W have all been cross-flashable ever since Samsung first introduced universal hardware, starting with the S8
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I thought so too, lol
Any thoughts on why my flash caused the SIM issue? Did I maybe just install the wrong version? I don't think I did, I used Frija
Some further research led me to the subject of accidentally mucking up the modem firmware which I might have done

Jetrel1 said:
I thought so too, lol
Any thoughts on why my flash caused the SIM issue? Did I maybe just install the wrong version? I don't think I did, I used Frija
Some further research led me to the subject of accidentally mucking up the modem firmware which I might have done
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See my other post above

iBowToAndroid said:
See my other post above
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My bad I didn't even compute. Thanks!

Jetrel1 said:
I live in Canada. I purchased an S20 Ultra off a seller on Canadian best buy (open box). I assumed it'd be a Canadian variant, but it was an unlocked US version (U1 firmware). OK whatever, but it meant my Samsung Pay doesn't work, along with a few other calling features.
I downloaded the patched Odin, downloaded the G988W firmware (with XAC CSC) with Frija, added the appropriate files to Odin (used Home CSC), and flashed it. The flashing itself went fine, but when I went to re-insert my SIM...nothing. It didn't even error out and say "No SIM Detected", I just had no coverage, and in SIM manager, both slots were empty.
Freaked out, and eventually flashed back to G988U1/XAA and thank Christ it works now. But my question is...why?
I dug though this forum before doing it to try and anticipate any issues. Followed the instructions to the letter, nowhere said this would be an issue. Couldn't even find any relevant support questions for this issue on this model. Not sure if it's a new development, but I absolutely don't want to risk messing my phone up further if I reattempt.
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?
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I Just did exactly the same and got a tmobile variant but want the W preferably the samsung factory rom not a carrier one. Which guide did you follow? I found this for the 21 Ultra and expect the steps to be similar https://forum.xda-developers.com/t/...-samsung-unlocked-bloatfree-firmware.4224423/

What calling features don't work in Canada? I have a W variant, live in Canada, and want an U1 to get esim working. I am also looking for a guide to follow to flash my phone.

funrunner said:
What calling features don't work in Canada? I have a W variant, live in Canada, and want an U1 to get esim working. I am also looking for a guide to follow to flash my phone.
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Samsung Pay doesn't work - that's a big one for me, it's a pain in the **** losing that. Will only accept US ZIP codes when setting up.
Caller ID doesn't work
That extra info you get when texting (like seen/read stuff) doesn't work in the native Samsung text app, you have to use google messages (yeah, no)
I'm sure there's other stuff but those are the main ones