Is it safe to flash the sm-g970f international variant to sm-g970n korean variant?
Its factory unlocked and i just want to get rid or the carrier branding specially the boot animation and possibly change the warnings to english also
Both units are exynos but the sm-g970n is single sim
Get the KOO firmware which is unbranded (SKC/KTC/LUC are carrier branded). You might kill the phone if you try to flash the international one.
Flashing to KOO won't solve the warning Korean language issue also i know for a fact it possible to flash the sm-g970f on sm-g970n because i received my phone that way but there's an issues no updates for example.
I have no idea how the seller did it probably not by odin.
Has anyone confirmed yet whether doing this with Odin or Heimdall is possible? And if it is, will the frequency bands used by the F variant be utilised? I noticed some cheap N variant phones for sale on ebay, but the bands are different to the F variants which were sold locally.
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Can anyone confirm that its not possible to flash a foreign firmware unless the phone is network unlocked ?
But could it be possible to flash an efs image from an unlocked phone before flashing a different firmware ?
id012016 said:
Can anyone confirm that its not possible to flash a foreign firmware unless the phone is network unlocked ?
But could it be possible to flash an efs image from an unlocked phone before flashing a different firmware ?
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The main concern would be that the firmware is for an identical device, because they often differ physically. Single SIM vs dual, Snapdragon vs Exynos, etc. I don't know why carrier lock would have anything to do with it.
I don't know if this is relevant or not, but on my USA T-Mobile Galaxy S4 I use Omega ROM, which changes my device from sgh-m919 to sgh-i9505 (international model). The side-effect is that it sometimes thinks I'm in the UK, even though I have my location set to where I am. For example, I can't use the Amazon app because it loads amazon.co.uk instead of amazon.com and the keyboard often tries inserting a superfluous (in an American's opinion) "u" to words like flavo(u)r and colo(u)r.
Hello,
I live in Switzerland and have a Exynos Galaxy S7. Will looking for accessories on Aliexpress, I noticed that the refurbished US variants sell for a huge discount compared to the SM-G930F (up to 80$) version. I saw that the G930F seems to support all LTE bands will the other are more constrained (but the AT&T version supports all the bands used in Europe as well). So my question is are they simlocked? Would they work in Europe (out of curiosity)?
Thanks
No advices?
You can get carrier unlocked US models which will accept any SIM, and they should work in the rest of the world. Of course network availability would vary, but you've already checked that. So if the US model supports all the bands your carrier uses you should be fine.
Only problem is the US model has a locked bootloader, so you can't use a custom recovery or ROMs. From memory root is possible but doing it is a bit different.
I'm not sure if you'd be able to flash your carriers CSC onto a US model phone, since the CSC would be built for the 930F. Which means OTA updates etc might not reach you, and you'll have to manually flash firmware updates.
Beanvee7 said:
You can get carrier unlocked US models which will accept any SIM, and they should work in the rest of the world. Of course network availability would vary, but you've already checked that. So if the US model supports all the bands your carrier uses you should be fine.
Only problem is the US model has a locked bootloader, so you can't use a custom recovery or ROMs. From memory root is possible but doing it is a bit different.
I'm not sure if you'd be able to flash your carriers CSC onto a US model phone, since the CSC would be built for the 930F. Which means OTA updates etc might not reach you, and you'll have to manually flash firmware updates.
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Thanks a lot for your detailed answer
I was wondering if it's possible to enable VoLTE on an SM-G930F running BTU firmware on an AT&T carrier. Is there any way to get things like WiFi Calling and VoLTE on it, or am I just screwed since I'm using the international variant of the phone?
When I first got it brand new from Wal-Mart, it was running TTT firmware (from Trinidad and Tobago for some reason) and showed normal 3G, 4G, and LTE symbols on my status bar. Since I wanted to get the Nougat update early, I flashed BTU which switched the symbols to H, H+, and 4G. Does that have anything to do with it?
Thanks.
You're certain it's a G930F? And from Walmart of all places? Exynos isn't meant to be sold in the US.
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
If it's a US snapdragon model you could flash the AT&T CSC via Odin without needing TWRP.
Beanvee7 said:
You're certain it's a G930F? And from Walmart of all places? Exynos isn't meant to be sold in the US.
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
If it's a US snapdragon model you could flash the AT&T CSC via Odin without needing TWRP.
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If OP successfully flashed BTU then it has to be a Exynos G930F, but I agree, most phones sold in the US claiming to be the G930F are modded Snapdragons faked to look like it, but they obviously won't allow a Exynos ROM to be flashed to them, so in this case OP has got a real Exynos
Could be the modem (CP) part of the firmware controlling which carrier services you can receive in your region, not sure I'd recommend flashing a US modem to a UK firmware though, unsure what would happen, although the G930F is pretty straight forward to unbrick as long as you can get back into download mode
Beanvee7 said:
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
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Where is this CSC tool? I'm not sure what you mean by "development section". I have an Oreo G930F and I'm trying to get VoLTE to work with AT&T.
Feenix0 said:
Where is this CSC tool? I'm not sure what you mean by "development section". I have an Oreo G930F and I'm trying to get VoLTE to work with AT&T.
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It hasn't been updated with the newer versions of Android so it's not really a thing anymore.
Next best thing is to download the entire firmware package for your carrier from somewhere like updato then flash only the home_CSC file. Although iirc this might now work if mixing and matching models, which is why the CSC flash tool was a thing.
Beanvee7 said:
It hasn't been updated with the newer versions of Android so it's not really a thing anymore.
Next best thing is to download the entire firmware package for your carrier from somewhere like updato then flash only the home_CSC file. Although iirc this might now work if mixing and matching models, which is why the CSC flash tool was a thing.
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The trouble is that the G930F was never officially released on US markets, so I can't find a US firmware. I'd gladly use another market's firmware if I knew it would support AT&T VoLTE and "LTE only" mode, but I have no idea how to figure that out!
So it turns out that I have the Canadian SM-G930W8 (as shown on the download mode screen), not the G930F (as shown everywhere else). Identical hardware, but I can only flash Canadian firmware.
I recently bought an unlocked AT&T Samsung S20 ULTRA 5G (SM-G988U), it doesn't get any OTA updates, I found out that I would need an AT&T sim card to do so but I'm not an US resident, so I can't get one.
Since AT&T doesn't publicly publish their firmware files and I want to update my phone, I was wondering if flashing my phone using another firmware with a different CSC code like USC (US cellular), would be risky or is it a safe procedure?
This would be my first time doing this procedure and that's the only part that really got me thinking.
Thanks!
U firmware is identical, no matter which carrier it's from. So if AT&T's latest release ends in UH2 and there is also a UH2 firmware from US Cellular, flashing it would be just like flashing the AT&T firmware, if it were available
Also have same question I have Samsung S20 . SM-G988U , service provider software version SAOMC_SM-G988U_OYN_ATT_RR_0018ATT/ATT/ATT Baseband Version G988USQS2SUE2, I am not able to get new updates as I am not in US, I need suggestion which firmware of android 12 I should update on my phone.
Hello, I would like to preface this by saying that I don't actually live in the US. I got this used unlocked AT&T Galaxy S21+ a few months back and an issue I noticed after using it for a while was the fact I was not receiving any OTA updates due to the fact I was not using an AT&T SIM card.
Now I want to switch AT&T to carrier-free firmware where I will be able to get regular OTA updates automatically
My current specs:
Model: SM-G996U
chip: Snapdragon 888
Baseband version : G996USQU1ATLF
CSC : G996UOYN1ATLF
AP/CP : G996USQU1ATLF
Is it suitable for installation?
https://www.sammobile.com/samsung/g.../SM-G996U/USC/download/G996USQU5CVDB/1640229/
N.B/: May doing this flash will brick or damage my phone?
On SamMobile, underneath my device model, there list of several firmware labeled with different US carriers. As long as the firmware I flash is under the model number I have (SM-G996U), nothing should break, right?
Please suggest me firmware. I want to get rid of carrier barrier and want to get regular updates automatically safely.
Did you try the rom? I have the same problem
OTA is CSC based. You'd have to use Samkey to unlock the CSC to a unlocked US one.
Flash the u1 xaa firmware. Works on my phone in canada
I have a similar issue!
So I received a refurbished S21+, it is unlocked and all but it has AT&T bloatware and I can't update to oneui 5.0... I live in italy but this phone comes from Germany and apparently has a US AT&T firmware (SM-G996U-OYN-ATT). I was following a tutorial with odin to flash to SM-G996B with ITV, which is the italian version with android 12 and oneui 4.1.1 is it safe to do so and then get the android 13 update the standard way? Could I straight up get android 13 and oneui 5 flashing the most recent rom or is it even worse?
The other solution I thought about is that I could just get the U1 XAA, but i have U for now and I don't quite understand if it's completely risk free or not.
Shohan112 said:
Hello, I would like to preface this by saying that I don't actually live in the US. I got this used unlocked AT&T Galaxy S21+ a few months back and an issue I noticed after using it for a while was the fact I was not receiving any OTA updates due to the fact I was not using an AT&T SIM card.
Now I want to switch AT&T to carrier-free firmware where I will be able to get regular OTA updates automatically
My current specs:
Model: SM-G996U
chip: Snapdragon 888
Baseband version : G996USQU1ATLF
CSC : G996UOYN1ATLF
AP/CP : G996USQU1ATLF
Is it suitable for installation?
https://www.sammobile.com/samsung/g.../SM-G996U/USC/download/G996USQU5CVDB/1640229/
N.B/: May doing this flash will brick or damage my phone?
On SamMobile, underneath my device model, there list of several firmware labeled with different US carriers. As long as the firmware I flash is under the model number I have (SM-G996U), nothing should break, right?
Please suggest me firmware. I want to get rid of carrier barrier and want to get regular updates automatically safely.
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Click to collapse
I'm having the same issue with my Samsung S20 Ultra 5G SM-G988U i bought the device yesterday and it accept my local Sim here but the issue is that there is limited features, for example I can't turn On/off my mobile data on and I can't change network mode like selecting from 4G to 5G