MangOH Yellow failed to upgrade FW

I tried to upgrade FW on MangOH Yellow and ran into a strange problem.
After I use
scp mangOH-yellow-wp77xx_0.7.0-octave.spk root@
to copy .spk file to MangOH Yellow, connection to would be lost. I guess MangOH Yellow reboot for whatever reason.

After connection is back,

ssh root@
root@swi-mdm9x28-wp:~# fwupdate download /tmp/mangOH-yellow-wp77xx_0.7.0-octave.spk
Connecting to service …
Can’t open file ‘/tmp/mangOH-yellow-wp77xx_0.7.0-octave.spk’ : No such file or directory

Anyone had experience with such problem, please help. Thanks.

After I used WP77xx_Release11_GENERIC_GCF.exe to restore the device, the problem seemed to go away. I can upgrade to mangOH-yellow-wp77xx_0.7.0-octave.spk afterward.