So, today I tried that, but somehow ended up with a blank screen and bootloop 
Just FYI to link to the other thread in case somebody has the same motivation for a firmware upgrade and ends up with the same problem but finds this first… 
So, today I tried that, but somehow ended up with a blank screen and bootloop
Just FYI to link to the other thread in case somebody has the same motivation for a firmware upgrade and ends up with the same problem but finds this first…