btrfs damaged

[siklosi]

Hi,
I woke up yesterday and when I turned on my TV my Rpi2 was not working. It was constantly rebooting. I guessed that btrfs partition was somehow damaged. I tried mounting and btrfsck on ubuntu but there was some error option (10). Should be unsupported lz4 compression. Then I tried installing fresh xbian on another card and running btrfsck (also with -s 1 option) on damaged partition (connected card with usb card reader). There was a lot off errors some .jpg images damaged from kodi cache. But it looks like errors are not corrected they appear everey time when btrfsck is run. When I try mounting that partition system freezes. Any ideas what could I do? I realy need to salvage some files from that partition.
Thanks.