You may even try flashing kernel only first. Only if that does not help, flash the fiasco image.
I will try to flash it (Have tryed installing "flasher-3.5.exe" on Windows 10. Clicking on the .exe, the program's window opens and shuts down after a millisecond... is it the way it works?) and i'm totally newbie with command manip! Question : Is it possible to flash the device even if it stays quite after having connected it with a PC. I only see the screen with this beautiful gray dark nokia watermark appearing after the "bzz"....
http://wiki.maemo.org/Updating_the_firmware
https://web.archive.org/web/20131117073524/http://skeiron.org/tablets-dev/
flasher-3.5 -F fiasco/kernel package name.bin -f