yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] sunmybun:
sm-g988U1 is unlocked firmware. no matter what csc/carrier you put in, the firmware will be the same. xaa,tmb,att,vzw,...etc

now, the sm-g988U firmware is carrier based.

each carrier will have their own updates, sometimes some updates may be the same but thats rare.

so if you wanna flash a U firmware. you need to download the one that you need. for ex. you need tmobile, so you download the TMB csc version.

but if you wanna go back to U1 firmware. it doesnt matter which one you download because they all are the same
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] xstation:
I am now on Tmobile firmware.

Thanks to all for the help given.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] dubt17:
Wouldn't it be better for tmo to go to unlocked? Or are their optimizations for the network?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] frr1:
i think it has network optimizations i always got better signal with the carrier firmware then unlocked i flashed the tmo firmware as well on mine
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] johnwayne27:
I just experimented with this. No dofference whatsoever. I got U1, tried tmobile sub6 5g and lte on unlocked, flashed tmo firmware and EXACT same performance. Sub 6 speeds were in fact slower than lte amd signal strength was exactly the same on both as well as speed tests. I went back to cricket on unlocked firmware. I was hoping it would male tmo better so I could justify keeping them and the 5g but it was a no go. Carrier firmware is only good for the features, npt the network performance, sadly.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Cyborg214280:
I must be doing something way off base here. I got my unlocked phone from Best Buy today and since its U1 I went ahead and flashed as OP posted. I am still not making out with the carrier stuff for T-Mobile.

I used the TAW package from his AFH with the TMB csc for userdata and I could not get the phone started.

I have a ton of different firmwares downloaded and got the phone to finally boot back up however in the settings it does not signify the U1, I just have the U with XAA listed still.

Maybe someone can break this down for me more?

Thanks
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] jeremyvbk:
If anyone flashes from a carrier to Unlocked version, before you put a sim card in, can you check the network band selection screen ( *#2263#) and under 5gNR does it show multiple 5G NR bands? The phone should support N2 , N5, N66, and N71, in addition to N260(MMwave). I am curious if the carriers are disabling the other bands or if Samsung has them disabled
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] johnwayne27:
Get the newer one off of frija.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Cyborg214280:
So download the newer U1 with XAA, flash that, and then download the U, with TMB and flash that? Wait for boot, Sim install, reboot. Then flash the userdata from here?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] johnwayne27:
The frija one will have tmo userdata.

Type sm-g988u(not u1) for model and tmb for region

If going back to unlocked firmware then use u1 and xaa
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] rizzo269:
Picked my Verizon version up yesterday and flashed right to the U1 unlocked firmware. The U1 seems much faster than the Verizon software to me although I did only have the Verizon on there for a few hours [emoji23]. Thanks again for the links and downloads.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Cyborg214280:
I did download the regular "U" version however it never took. The system settings still show XAA but my model no longer shows the 1 after the U. It's interesting because it's "halfway" taking... What version of Odin should I be using? Is there anything else I can try?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No, you're doing it out of order. Read the steps in the OP again
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ikm19:
I had flashed TMO firmware on my unlocked phone, after using it for couple of days it seems the speed is same at least for me in Houston.

but there is a small problem I guess I came across. the accidental touch is not upto the mark specially holding the phone in one hand try to do something.

Some how unlocked model firmware is good at detecting those accidental touch on side bezel than the firmware of tmobile.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Cyborg214280:
Well I think I figured it out. Tried two more times and no T-Mobile splash screen. I was using odin 3.14 but I switched back to 3.13 patched and ran in adminstrator mode. Not a clue why, but it worked then.

I do have to say Odin has said it passed every time, no matter which version but I am just glad to have my advanced messaging back. Thanks for the write up!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Freeddi:
Is there a solution to flash a S20 Ultra exynos from Vodafone to DBT?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
You're in the wrong thread. This is for U and U1 models
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No. That doesn't affect the IMEI at all.

I can provide a recommendation for a professional 3rd party unlocking solution, if needed
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ahenderson223:
Is the IMEI matching what AT&T has on file for you? If it doesn't that could potentially be the problem.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] duckfart:
It does, that's why they could not figure the error.

The weird thing is the phone is unlocked, tried it with T-mobile sim last night and it worked; go figure.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] reyatc:
Will the same work for the S20+ 5G? I have model SM-G986u1 and trying to flash the ATT firmware so I can get Wifi Calling. Ca I flas a SM-G986U Firmware?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Yes go here.

https://xdaforums.com/galaxy-s20/how-to/g986u-g986u1-firmware-links-flashing-t4054629
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
BTHD is out for U TMB. When it boots up the OPTIMIZING APPS looks different. Instead of showing all the apps updating it just shows a gear turning with a percentage bar working at the bottom of the screen. Seems to be working great on ATT. Will update if something fails ??

Edit: just noticed this update has the One UI version 2.5 ?

Several changes to the camera and other software
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tyrone1:
BTH3 is also out for G988U1. Coolest feature I noticed is wireless dex.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] xstation:
Hello, I have an unlocked S20 Ultra which I flashed Tmobile firmware onto it when I got it. I need to send it back to samsung via the trade in program, so I'm trying to install stock unlocked firmware on it.

I'm using Odin 3.14, when I add to firmare files onto it and I press start I get a SHA fail errror. Here is the log.

<ID:0/004> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/004> Odin engine v(ID:3.1401)..

<ID:0/004> File analysis..

<ID:0/004> skip file list for home binary

<ID:0/004> quest.fv

<ID:0/004> testvector.fv

<ID:0/004> spunvm.bin

<ID:0/004> persist.img

<ID:0/004> carrier.img

<ID:0/004> dqmdbg.img

<ID:0/004> metadata.img

<ID:0/004> userdata.img

<ID:0/004> misc.bin

<ID:0/004> Home Binary Download

<ID:0/004> Total Binary size: 7913 M

<ID:0/004> SetupConnection..

<ID:0/004> Initialzation..

<ID:0/004> FAIL! SHA256 is invalid

<OSM> All threads completed. (succeed 0 / failed 1)

What am I doing wrong?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kchitown1977:
Tmo got it, I wonder when sprint version will get it?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] FN20S:
I had a 988U version and I installed the 988U1 firmware but after that VOWIFI (Voice WIFI) doesnt work anymore, I can activate it but when I activate airplane mode and leave wifi on, it doesnt show me the vowifi icon on the status bar and dont allow me to make calls, it used to work before... any ideas?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Are you running the PATCHED ODIN file?

https://xdaforums.com/attachment.php?attachmentid=4952061&d=1581888388

---------- Post added at 12:35 PM ---------- Previous post was at 12:00 PM ----------

You have to flash the U CSC in order to keep WiFi Calling.

---------- Post added at 12:45 PM ---------- Previous post was at 12:35 PM ----------

It is available via FRIJA. Download and you can have now ;)
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] FN20S:
Can I flash CSC only? Or I need to re flash al the other files ?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kchitown1977:
Spr still showing atgl on frija can tmb be flashed over sprint
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
You can just flash the U CSC

Any version can be flashed over any other version
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kchitown1977:
Thanks
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] elliwigy:
1BTH3 OneUI 2.5 U1 Firmware links if anyone was looking for them.. both links contain home and regular CSC files.. Not sure if it is just me or not but the G986U1 firmware seems to turn device into the BTS edition device..

G986U/U1 - https://www.androidfilehost.com/?fid=8889791610682922961

md5: 9af34d8ebaa8e279d6c0d013d2c40ea2

G988U/U1 - https://www.androidfilehost.com/?fid=8889791610682922967

md5: 8f5f288be96cd873b082949165913022
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Probably because you downloaded the OYZ CSC instead of the regular OYM. That's how it works with the Star Wars firmware of the Note 10 models
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] elliwigy:
didnt know lol.. i can dl the oym if need be
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Not really needed, seeing as anyone can grab it themselves via SamFirm or Frija. Also comes compressed via those tools, which is good for those who may not have unlimited bandwidth
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Nexus5-32GB:
Help needed!

Sems like am unable to enter download mode. When I get to recovery and chose reboot to bootloader, the phone boots to old style bootloader very similar to picture in attachment. I defientely can not see the typical samsung download mode. On top of that the power button in this mode doesnt work. +- keys do work but am unable to perform any action appart hold power button for 10+second to force shut down the phone. Anybody experience the same?

My CSC is XAA since I bought the phone.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] mopartonyg:
Hold Volume up and down at same time and plug phone into computer while holding down the volume buttons.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Nexus5-32GB:
you are my hero, this isnt mentioned anywhere in odin manuals :D works fine and am flashed to OneUI 2.5 update. Thx
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] yeltrah123:
Can anyone help me plz. I'm looking for AT&T G988U firmware so I can flash on my unlocked U1 model. Frija doesn't work with ATT csc.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] mojicacarmelo:
Hello you just download any "U" Firmware and apply ATT User Data i have this link from here XDA https://androidfilehost.com/?w=files&flid=305576

There you will find february "U" Firmware Flash with patched odin and apply ATT "User Data" after that you can OTA Update ATT at the moment of this writing is on august sec patch with UI 2.5 good luck
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
....Seriously? Did you even bother reading the OP...?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Lol that isn't simple enough. You can give them the spoon BUT you can't make them eat :laugh::laugh:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] yeltrah123:
I'm already on One UI 2.5 on unlocked model. Can I still flash that old user data if I flash G988USQU1BTH2?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Yes
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
G988u1 bth4

September Security Update available now :D
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kиt:
Hi everyone, thank you for this thread it gave me lots of information for my plan to crossflash my phone

But there is something I don't understand yet

A US friend sent me a SM-988U from AT&T, which she unlocked before sending

Living in France, I can't update the phone and I'm stuck with OneUI 2.1, old security update and camera focus issues

If I'm correct, using a U1 ROM would let me update the phone.

BUT

I read that when crossflashing, it's possible to be prompted to insert an AT&T SIM card to unlock the phone again?

I obviously can't, so I'd be stuck with a MP4 player instead of a phone lol

Is that true?

Thank you for reading me, sorry if that question was asked before, I really browsed before writing :/
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No, that's not true
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] khadkapramod:
I tried to flash SM-G986U (VZW) to TMB version. Everything is passed but at the end I end up with Verizon firware again and again. Has anybody experienced same thing? and how do you resolve it?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
This is a G988U thread. Please post your question in the G986U thread
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Pflashflood:
Does this really work??? I have this same issue and when I type this innit says "Connection Problem or Invalid MMI number". This would save my life If I could get this to work!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Well if that's what you get when you type it in, then no, it doesn't really work. And if doing that would "save your life", that means that doing it the long way (firmware flashing) would "kill you". Bit of an exaggeration, don'tcha think....?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Pflashflood:
Well of course I entered in the IMEI where it said to enter it. And yes the trouble that I've gone through with this s20 ultra has nearly killed me. Lol, I just want my t mobile firmware on here without having to go through Odin and risk bricking my phone.

Do I do this with or without a sim card in?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
It's practically impossible to brick a Samsung (or for that matter, any Qualcomm) phone, due to all the failsafes. Even if your computer crashed in the middle of the flash, the phone would still boot up to an alternate "download mode" where Odin would still detect it
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Pflashflood:
Ok so really as long as I follow the tutorials on here I shouldn't fear ruining my s20? I want the 5g function working and it won't work with my firmware the way it is (XAA/Xaa/SPR). Changing it to TMB/TMB/TMB kis what I want
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Correct
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
I'm on AT&T and have never taken my sim card out anytime I've ever flashed whether I was going to or from either U / U1.

Not saying it will work for you just saying..

---------- Post added at 06:00 PM ---------- Previous post was at 05:56 PM ----------

True story!

Don't recommend doing so BUT I've pulled the USB out before it was done and it will boot to an alternative download mode and allows you to re-start ODIN.

I'm still really liking this device!! Cheers :highfive:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] elliwigy:
the *#272*IMEI# dialer code only works on certain csc.. its called a keystring.. each carrier has their own keystring.dat file.. basically a dialer code might work on say verizon csc but not work on sprint
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] cjegan2008:
Wait a minute.....was your OTA a AT&T OTA or a XAA OTA after flashing from U to U1?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Look at my original screenshot its ATT/ATT/ATT

Edit: if I recall I had flashed totally from U to U1 and DID NOT flash the CSC U HOME
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] cjegan2008:
So is there a way to fully convert the US AT&T model to show XAA/XAA/XAA instead of XAA/XAA/ATT ? I really want to fully convert this to an unlocked model. I know on the S9 you could fully convert it over with no issues. Would changing the CSC using SamKey allow you to fully convert it ?

---------- Post added at 12:59 PM ---------- Previous post was at 12:48 PM ----------

I had this issue when the Pixel 4 XL first came out. I wanted to unlock it from the AT&T portal, and AT&T said the IMEI wasn't in their system. This seems to happen when AT&T doesn't update their locked database with new release phones. Wait a few weeks and try again.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Even U1 models don't stay on XAA/XAA/XAA - at least one of the 3 sets of codes will change to match whatever SIM is inserted. The only way it stays XAA for all 3 is if you never put a SIM into it.

You may be able to get it to go back to all XAA by inserting the SIM of a carrier that doesn't have their own S20U model - a prepaid MVNO etc. But idk if that will change it back to XAA or just make the current code stay the same. If you want to use the device with an AT&T SIM, no, there's no way to keep all 3 codes at XAA. But neither does that really give you any benefits, so there's not much reason to do it.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] cjegan2008:
The reason I fully want to convert it is for U1 OTA updates. Is there a way to do that ?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Are you not getting OTAs while on U1 firmware while using an AT&T SIM?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] cjegan2008:
I haven't flashed it yet, I want to confirm that all OTA's after flashing will be U1 OTA's and not AT&T's crapware
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
By definition, U1 firmware contains no carrier bloatware. So U1 updates also by definition contain no carrier bloatware.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Confirmed no bloat

FWIW you won't be able to use the AT&T Wi-Fi calling functions if you don't flash the U CSC HOME of closest firmware just a heads up...
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Duck Quan:
https://drive.google.com/file/d/14p37Ij9o0vCH4VlwUfvc569R-b-qsJvj/view?usp=drivesdk

First Pre-Beta build for Sprint/TMobile S20U. Must be on BTHD to install through recovery.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
This thread is only for officially released builds, not betas or pre-betas. It's also for Odin files, not update.zips.

Please start your own thread, as there's likely to be substantial interest and discussion
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kchitown1977:
https://xdaforums.com/galaxy-s20/how-to/oneui-3-0-beta-s20-ultra-beta-tread-t4143441/page12 here link to thread on xda for discussion so we can keep this thread clean for what OP intended

---------- Post added at 05:28 PM ---------- Previous post was at 05:28 PM ----------

Hope it was OK to share link
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Crazyjoe909:
Firmware type

I have a S20 Ultra G988U which has G988usqu1atct, does it matter with one i use?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Assuming you're referring to U1, nope
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
If you've read the OP thoroughly then follow just as it says. You can flash whatever you want generally speaking as long as it's U or U1 firmware.

You can keep your data as long as you flash HOME_CSC. As stated flashing CSC_OMC and USERDATA will wipe your data.

Good luck and happy flashing :D
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] mused1985:
I have galaxy s20 ultra Verizon. G988u. Trying to Convert it to g988u1 I tried everything all the odin that I seen. But it keep saying sha256 involved. Or something like that. I am in the new update (BHT2) Please anyone help me. I hate Verizon firmware. . . Which is the right firmware for my device and which odin I need to use. So I can convert it to g988u1. Plzzzzzz help me
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Look at my 2nd post on PAGE 40. You need to use the PATCHED ODIN.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] mused1985:
Thanks it worked
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Timonkop:
Thank you

Big thanks to thread owner iBowToAndroid. Was alway curious how to get updates faster. Now I don't have to wait for slow AT&T. Finally decided to de-bloat and install U1 firmware. Used a U CSC and had wifi calling, etc. However, software update button was missing. Went to a U1 CSC. Software button is back. Is it possible to flash a U CSC and have the software update option?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] jalil8753:
i have s20 is beutifull
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
I'm on AT&T as well and it goes away when you flash the U CSC but you get to keep the wifi functions.

Curious to know why you want or need that option if you're going to be updating manually now :confused:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Timonkop:
I was hoping to try the one ui beta. It's my understanding that to have the official beta, I need to go through the samsung members app and have the software update button available. But honestly it's not a big deal. Works excellent even without att exclusive features.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
Oh I see. There's ways around that but its off topic for this thread. If you go to the Beta 3.0 thread and read thru it you'll find how to flash it
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Kchitown1977:
New Btie on frija tmo, was wondering if I flash this to sprint
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Nope. Beggars can't be choosers unfortunately - lol

The OP states quite clearly that all firmware is 100% interchangeable
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Timonkop:
Yea, I was being a little greedy :). Happy with the U1 firmware. Thanks again!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
BTIG for U and U1 has been out a few days and is still the September security update :good:

Edit:I stand corrected. The U1 BTIG has the October security update :good:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] JDBarlow:
TMB U BTJ4 now available with October Security :cowboy:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] alirz:
Hi All.

im looking to have better support(LTE/5G wise) on my S20+ XAC (Canadian unlocked) which im currently using on T-mobile in US.

initially im looking to go to the U1 to see if that helps. Dont necessarily want to go to the TMB fw due to bloat. So here is my plan.

Using moded Odin, flash to U1(XAA) fw. This should put on the U1 OTA schedule?

If things dont workout on that fw, from there i can then go to TMB fw without the USERDATA? I can flash the HOMECSC as i dont care about wiping the phone.

All of this is obviously between fw that are on the same bootloader version. From what i can tell, the S20+ is still on bootloader 1?

Do those steps sound about right?