I just upgrade the firmware on my pair of RRC1225MKIIs. I have used them successfully for several years on my Mac with various MacOS version (currently MacOS 10.11). After the RRC firmware upgrade, the USB connection is no longer recognized by MacOS. I would like to downgrade the firmware version, but I unfortunately failed to note what the original firmware version was (it was about 2 years old).
What version would you suggest that I roll back to in order to restore USB recognition, or do you have another solution to suggest?
Thanks,
Mark VA2MM