As of 2022-12-09:
Files available from their website:
GM-30_Firmware & Software_V1.05
GM-30_Firmware 20210403 & Software_V2.06
GM-30_Firmware 20210615 & Software_V2.06
-----reply email from Radioddity
Hi Dennis,
6.03.009 is the latest firmware from 11.17.2021
6.03.006 was the previous from 6.15.2021
6.03.003 (IIRC) was in the 4.03.2021 release
6.03.001 was in the V1.05 download from 3.18.2021
6.03.009 and 6.03.006 are the same, except 6.03.009 was provided for GM-30 radios that had a chip change due to supply shortages and the FM broadcast radio did not work. That is the only difference I have found.
If you have v6.03.009 and the FM Radio can pick up local stations, that is as new as is available.
Cheers,
David ________
Radioddity Support Team