I got two working tk1 with orignal configuration wanted to upgraded to Ubuntu 16.04.
I followed this post to perform the installation
Both tk1 couldn’t boot after flash. We got errors like:
CPU: 0PIS:0 Comm: swapper/0 Not tainted 3.20.40-gb271e8f #1
WARMING: at dvs/git/dirty/git-master_linux/kernel/watchdog.c:270 watchdog_check_hardlockup_other_cpu+0xe8/0x11c()
Watchdog detected hard LOCKUP on cpu 1
Anyone can help here?