wonder if someone can help me with my N9,

in short: it does not boot, reflashing does not work, but I can get access to rootfs, user data and application disks.

long version:
my N9 suddenly went into powerdown and reset, and won't boot anymore: it gets stuck on the 'nokia' logo, not progressing (tried leaving it overnight). I figured out I might have to reflash. I followed instructions, and reflashing proceeds all the phases (cert-sw, cmt-2nd etc), but fails the rootfs, flasher output ending in:

Fetching error list:
========================================
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
mmc: handle_buffer failed in lzo decompress (-1)
[Pipe 5] Finishing in error state with status 1
========================================

"mmc:.." line might also mention something about sfdisk or other errors (it varies between different tries) - cold flash doesn't start at all

next I tried to start rescue system and access the disks with
/flasher --load
-k vmlinuz-2.6.32.20112201-11.2-adaptation-n950-bootloader -n initrd.img-rescue2.6.32.20112201-11.2-n950 --boot
this most of the time works (but often I get input/output errors)...at least I managed to copy all data over! (don't know if there is anything else I can do with the rescue system?)

Question: is there anything I can do to get the N9 working??