I have tow GWN7610 version 126.96.36.199(master) and 1.08.17(Slave). Appear “All devices upgrade failed!” when i upgrade Slave version.
how to deal with this problem
Upgrade to 188.8.131.52 first then try upgrade to upgrade to the latest.
See http://firmware.grandstream.com/Release_GWN7610_184.108.40.206.zip or use firmware.grandstream.com as the host address to upgrade the firmware in the unit.
maybe the fastest way is to make a format factory on the slave, make it slave again and then update it
thank you very much
you would like a like and the “solution” button