Hello,
Is there any way to decript binary back of RB751G router with the aim to restore configuration on RB962 afterwards?
RB751G does not power on anymore but I have binary backup from it.
No way. Binary backup can only be restored on same model … and even that is not recomended due to some settings which override HW properties of “receiver” (e.g. interface MAC addresses).
Which means you have to re-do the config on your new router anyway. If you had text export from RB751G, you could use it as reminder.