Question US modem question - Sony Xperia 1 III

Has anyone tried changin the chinese version xqbc72 firmware and able to enable the modem freqs for here in the US?
basically changing the chinese to a US model with 5g enabled.

My understanding is that it is not just software that enables carrier bands, but it is also a hardware limitation along with the proper firmware. If possible I would recommend you stick with a US version for the US...besides you may need the warranty.

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[Q] Firmware crossgrade

Hi all.
I have one of the AT&T Atrix phones, and was wondering whether, when my local carrier (Telstra) bring out their own branded version, it will be possible to install the Telstra firmware over the AT&T one. Perhaps when they bring out the update to 2.3?
I know the bootloader will only allow signed firmware, but I'm wondering whether they also check whether you're trying to install firmware from a different carrier or not. If not, it could be a way to get both localised features as well as remove some of the AT&T restrictions.
Any thoughts?
For anyone interested, it turns out that this is possible to do (but may cause reception issues because their firmware will be for the international version of the Atrix, which has different radio capabilities).
Thanks for the info. I was wondering the same thing. Could you keep us informed if you hear anything else?

[Q] Can you load the developer ROM on to another RM-821 variant?

I'm wondering if anyone has done this and what it does (if anything) to the available frequencies. I'm hoping that an unlocked international variant with the developer ROM will allow access to the 1700/2100 frequencies, so the device could be used on TMo USA. Is this possible, or are the available frequencies simply not affected by the installed ROM?
Thanks.
jandref said:
I'm wondering if anyone has done this and what it does (if anything) to the available frequencies. I'm hoping that an unlocked international variant with the developer ROM will allow access to the 1700/2100 frequencies, so the device could be used on TMo USA. Is this possible, or are the available frequencies simply not affected by the installed ROM?
Thanks.
Click to expand...
Click to collapse
As of right now, you will likely brick the phone if you flash a firmware not designed for your version of the phone. I don't think anyone has figured out how to flash the radio separately from the firmware yet. I'm holding off buying the 920 until someone figures it out
hawc1506 said:
As of right now, you will likely brick the phone if you flash a firmware not designed for your version of the phone. I don't think anyone has figured out how to flash the radio separately from the firmware yet. I'm holding off buying the 920 until someone figures it out
Click to expand...
Click to collapse
Bummer. Thanks anyway.
May have to go with an unlocked Rogers, but the branding and lack of colors beyond black and (eventually) yellow is disappointing.

[Q] Can we install network lock firmware on unlocked firmware samsung?

Can we install network lock firmware in unlocked international version of Samsung S5?
Such as install locked Vodafone onto unlocked T-Mobile?
It depends on the hardware. You have to check if it is the EXACT same model, otherwise you can cripple, or even brick your device.
It is not uncommon to have different models on different carriers in the same country, specialized for the specific carrier's network - though this mostly applies to the US, mainly because of the CDMA vs GSM networks.

Can i convert a US version device to Europe?

Hello,
I was wondering if is possible to flash Europe's model Firmware on US model,and get the device work?
I want to do this because I am in Europe and I cannot connect to LTE networks because my oneplus X is US version. So I want to change the firmware to european version to be able to connect to band 3 - 1800Mhz networks that are not supported on US version.
If this is not possible, is there any solution to change the frequency and the band of the device?
Thank you
The firmware is the same. It's the hardware that change.
You can't do anything about that I'm afraid..
https://forums.oneplus.net/threads/oneplus-x-regional-versions.398205/
Sorry forgot to mention that it's the antenna :
https://www.reddit.com/r/oneplus/comments/4hvcrt/is_it_possible_to_switch_the_opx_from_european/
Hello, thanks for your answer.
I saw this article : https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
and that is why I was wondered if is possible to work on our onyx device.
I knew it was possible on some Xiaomi devices too, but I didn't know some OP could do it too...

Changing CSC on Korean Version

I own a Note 20 5G Korean version (SM-N981N, CSC is OKR). It does not have region locked sim.
However, i want to change its CSC into US or Canadian version, with less bloatware, and most importantly firmware that supports eSim
I'm not sure i can just flash different firmware (N981U1 or N981W etc).
Do i need a unlocked boot? Do i need to worried about going to Samsung jail?
Also im not really worried about warranty or other legal stuff.
Edit: I'm on Android 13, if that matters

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