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SM-986U, flashed to U1, CSC won't change with sim.

Purchased a Note 20 Ultra SM-986U. It was unlocked by T-Mobile.
I use Cricket, which is an ATT MVNO. It generally will be "AIO" in Samsung CSC list.
I flashed the Note 20 to U1, and no matter what SIM I put in, it stays at TMB/TMB/TMB.
I have tried what I believed was the specific ATT firmware as well, but still, TMB/TMB/TMB, no matter what I do.
I saw someone post about this on reddit in the T-Mobile subreddit, but no answer yet.
Anyone have any ideas on how to get it to change?
Without that, I'm stuck with no 5g, volte, or wifi calling. I'm basically stuck with a Tmobile device...

Hello, you could try *#272* your IMEI #... you can select your CSC.. Be warned .. It could wipe your phone.
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Good luck

When can we expect the Version 11 U1 stock firmware release?

I have a Galaxy A51. It was a Spectrum phone but has been unlocked. I can only get calls and text but no data when I transfer my number over to it.
A guy on reddit, very helpful, told me it was the firmware. He was walking me through the process of flashing the firmware to stock so it would not be tied to any carrier.
And at the last second I pointed out to him that it was already upgraded to Android 11. We were about to use the version 10 software.
He tells me that Version 11 of stock firmware for U1 has not released yet and I need to wait. Version 11 for U for stock has already been released. When do you think I could expect the unknown (stock) firmware to be released for U1.
This is what I am talking about. I'm sure y'all are familar with what I am speaking of, way more than I am. This is for U1. He says I need to it say Unknown but for version 11.
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Question Samkey and Chimeratool can't change CSC

Despite fold3 and flip3 being listed as supported both tools fails to change CSC. So don't waste your money.

Is the support informed?

It was my understanding that you don't actually change it anymore. I thought you (network) unlocked the device and the new SIM would trigger an update or you could install it through Odin.
The Sprint S10+ I purchased updated itself to T-Mobile when I switched carriers. That isn't this phone, but not something I see them reversing.
The IMEI will still trace back to a previous carrier, so the only benefit would be automatic updates for the right carrier.

Do you know any way to change csc?Will samkey support it in the future?

eddiedimitris said:
Do you know any way to change csc?Will samkey support it in the future?
Click to expand...
Click to collapse
I've asked Samkey support. It's coming soon.

Anyone tested new version?
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Question [Q] Galaxy S21+ G996U1 OTA update

Hello everyone.I bought my S21+ last year, Nov 18, 2021. My phone was imported from the US with original model number G996U and the CSC is VZW. I live in the Philippines and have not been getting OTA updates for my phone. I just manually update it via Odin every 3 months.
I am now tired of not getting OTA updates and did my research and there are users here in xda who were really helpful that advised me to switch to G996U1 firmware with XAA CSC. I've already done that, however my service provider software version shows as XAA/XAA, XAA/VZW.
So my question is, will the VZW at the last part which is the carrier line id will cause me to still not get OTA updates? I have a locally bought SIM card and I don't have a VZW sim card. I know the latest update for G996U1 has not arrived yet but I'm thinking about this everyday. Please help me out guys, for my peace of mind.nd.
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I need your help to find a very specific firmware

I am probably the only one who still has a functional samsung galaxy note 7 but I am in a dilemma, it has the wrong firmware installed, originally the equipment is from the T-Mobile company but it has Verizon firmware installed
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i can't find the t-mobile firmware binary 3, the computer to make it bootable again i had to take out some files of the combination firmware (boot.img and recovery.img) so that it can boot normally but it doesn't detect the networks of my sim card, it is released from the factory and the imei code in my country is enabled for free use, when I restart the equipment it shows me that message on the screen
I need your help to be able to find the T-Mobile firmware binary 3, searching the web for just a very few data 1 a single screenshot of a note 7 with the firmware I am looking for, it would be very helpful if you know where I can download it
The only information I found is that there are 2 versions of the firmware I am looking for (N930TUVU3TPL1)(N930TTVRS3APL2)

Why not re-flash phone's Stock ROM?