no heartbeat FLM 2

Hi, My Flukso have no more heartbeat after power outage and internet outage. Following older topic , i want to de-brick my Flukso.
I 'am using Ubuntu version 18.04 but dit not arrive at the last step:
$ wget ==OK
$ wget ==OK
$ wget ==OK
$ sudo ./ap51-flash eth0 openwrt-atheros-root.squashfs openwrt-atheros-vmlinux.lzma ==Not OK

./ap51-flash: error while loading shared libraries: cannot open shared object file: No such file or directory

What can i do to solve this ? Did i have to install ?

Fluc's picture

Great chance here, after a few days with no power, i powered up my FLM again and it has a heartbeat and it took the latest update and is running now for more than 2 weeks.