I have no idea how to change FW on Batumi.
Do you mind going through some explanations or is it too much to ask?
I have not found so many resources apart from a few tutorials on YT.
The Reset/Sync thing is not working as expected though...

"I've seen things you people wouldn't believe... Attack ships on fire off the shoulder of Orion. I watched C-Beams glitter in the dark near the Tannhäuser Gates.
All those moments will be lost in time, like tears in rain. Time to die..." R. Hauer