How to upgrade the firmware(4.05 CSV )on RT82?

How to upgrade the firmware(4.05 CSV )on Retevis RT82? Now Retevis RT82 have the last firmware version is 4.05, and it have 4 editions: Retevis RT82(CSV)-V4.05 Retevis RT82(CSV-GPS)-P4.05 Retevis RT82(GPS-REC)-S4.05 Retevis RT82(REC)-D4.05 It is well known that Retevis RT82 have tow models:GPS & NON-GPS, so we have  corresponding version for that. Do you know the…

Amateur Radio RT82 in the 6th ICMCS

RT82, as the amateur radio, was taken to the 6th International Conference on Multimedia Computing and Systems( ICMSC’18). ICMSC’18 ICMCS’18 was a part of a broader event, named i-Week’18 (that meant “Innovation Week”), between May 7 and May 12, in Rabat, the capital of Morocco. There were several activities in this i-Week’18, including various competitions in…