Thanks!! After almost 4 months my ARC is booting again!!
My ARC (LT15i) was on Android 2.3.4. factory settings (when I bought it second hand).
Then the ICS update came in.
After the reboot from update is was bricked.
Now is it is working again with ICS 4.0.4 dutch (4.1.B.0.431).
And oops, another system update came in (with wifi to 4.1.B.0.537) shall I update it? Or only with PC companion / Sony update service?
I do not know if the ARC is bootloader unlocked or so.
Is there a way to find out?
Let's go Girls!!!