thanks. unfortunately i’m still failing, as when i try to run the ./adb devices command it says unauthorised (i went sudo and still it says unauthorised). i’m on linux
Operating System: TUXEDO OS
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
I think you probably need to enable USB debugging Enable USB Debugging and OEM Unlock
i did that already on the phone. now i’m trying to install the adb tools on my laptop. i found this link: ADB Install Selected - KDE Store but i don’t know if it’s what i need. i’m getting very confused, every step is taking me down a different thread of installing something else somewhere else. i can’t understand why it’s so complicated to do an upgrade??
This is for something else … I think you should just drop that.
Our pointer was to Installing adb and fastboot on a Linux PC … this tells us to get platform-tools from Notas das versões do SDK Plataform Tools | Android Studio | Android Developers.
Unauthorised can also happen when you were sent a notification but didn’t see it on the phone. Can you on the phone pull down to see notifications … and there is a USB “Allow from this computer” Notification.
ok, i’ll forget the KDE store link. i have already downloaded & unzipped the platform tools, then opened the terminal from inside that folder. i try to follow the instructions to install it, but it says unauthorised. my phone is attached to the computer with usb cable, i have usb debugging and OEM unlocked.
i think it is simply that i’m too stupid to understand what to put instead of “path-to-the-extracted-archive” for the file path. i’ve extracted it on my desktop.
no notification on my phone.
thank you for your patience & sorry if i’m sounding frustrated.
We need to see
./adb devices
reply first.
You can try this with the phone in normal mode.
If already in Recovery mode you may try to navigate to Advanced > Enable ADB.
At this point
helen@tuxedo-os:~/Desktop/platform-tools$
you are in the working directory so you now need only
./adb devices
i’m not sure if i’m in Recovery mode or not. how do i know? (Advanced Restart is turned on, but i don’t get any option for restarting in recovery mode so maybe i’m already in it?)
i can’t find Advanced > Enable ADB
i tried just ./adb devices in the terminal & got this:
List of devices attached
A20A631R0201 unauthorized
This is the point of
Prepare the device
in our tutorial where there is an image of the phone in recovery.
wait i found it, am restarting in recovery mode
i have an option to “Apply update” (or reboot, factory reset, advanced)
progress! … now it’s connected 
it’s installing. it says it will downgrade my system but i said yes as i think that’s what’s needed - but now it says the downgrade is not allowed 
E: Update package is older than the current build, expected a build newer than timestamp 1742264788 but package has timestamp 1728418217 and downgrade not allowed.
Step 1/2
So this is what we knew …
So this is clearly not the correct / expected upgrade path which was my guess.
This is saying that we need a download newer than March 18, 2025.
Edit.
Wrong, I quoted community, you are official, sorry.
ok, i will try this
thanks 
You are official so e-3.0.1-t-20250606498724-official-FP3.zip
from https://images.ecloud.global/official/FP3/e-3.0.1-t-20250606498724-official-FP3.zip
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it seems to have stopped at 47% 
on the phone it still says "Installing update … " and “Step 1/2”
& in the terminal it shows 47% but that hasn’t changed for several minutes …
now in the terminal it says "Total xfer: 1.00x " and on the phone “Step 2/2”, but it isn’t showing the “Install completed” message …
If 10 minutes have gone by since 2 of 2 I guess you could wait 5 more minutes then go for Reboot system now. 
The 47% is exactly as expected.
it’s 15m now, & it’s still saying “Step 2/2”.
there isn’t a reboot option shown but there’s a back arrow at the top left of the screen … should i use that?
