upgrade ROS to v6.2, the configuration will be gone after upgrade?
It is i just drag and drop the package into file at ros there and restart it?

The config is retained between versions, just drop the file into the root directory and reboot the device.
Reboot from /system reboot, don't just repower as the upgrade is done before the router reboots, not as it powers up.

The config is retained between versions, just drop the file into the root directory and reboot the device.
Reboot from /system reboot, don't just repower as the upgrade is done before the router reboots, not as it powers up.

so if i downgrade to 5.25v from 6.1v, the config will be not same?