Unable to update firmware from 2.5.4

Hello，

Yes, you can update the slave board firmware via ssh , Please give us your skype here , we will add you , and then you can prepare teamviewer for remote checking .

Thank you a lot for fast reply.
Added you to Skype

Hello

Give us your Skype ID please .

sure:
onanchenko.sergey

issue was solved.
many thanks to Vito Rao and Dario Hu.

upgraded firmware on slave first from 2.5.0 to 2.5.4 and then to 2.5.8.
did so via ssh - firstly uploaded firmware to /data via scp (please note that slave has different port for ssh - 12346 in my case)
and then

cd /data
/my_tools/unpack.sh wg400-2.5.8.bin

then reboot.

Thank you for assistance.

Hi