Maintenance Update
This interim Release is focused on adding and updating support for certain of the radio protocols only:
- "Legacy" Air V7 ( debuted in March 2024 )
- EASA ADS-L SRD-860 Issue 1 ( first published in December 2022 )
Air V7 
SoftRF implementation of "Legacy" Air V7 radio protocol is limited to a bare minimum. It is based on a brief description 
that has been published recently. The V7 feature may or may not work as expected.
The protocol support operates both with V6 and V7 radio packets on transmit and receive to maintain compatibility with previous versions of the SoftRF firmware.
ADS-L 
- SoftRF implementation of EASA ADS-L SRD-860 M-Band radio protocol is limited to a bare minimum. The packet data encoding and decoding functions rely heavily on the ADS-L library taken from the OGN source ;
- LBT feature is not supported at this time ;
- O-Band is not supported as well.
Please, read commits history for more information.
Known issues
- same that previous Release 1.5 has.
Binary downloads and flashing instructions
Firmware binaries of the Maintenance Update have been released for certain platforms / SoftRF Editions only:
- ESP8266 ( Standalone or UAV )
- ESP32 ( Prime Mk II )
- ESP32-S3 ( Prime Mk III or Midi )
- nRF52840 ( Badge )
- S76G ( Dongle )
- CC1352 ( Uni )
Users of other SoftRF platforms should either
- build the Maintenance Update firmware from source by themselves or
- wait until next official Release.
WARNING
- This upgrade may reset your SoftRF settings down to factory default values. Please, follow these "backup and restore" procedures prior to executing the update
- ESP32 only: you may try "Web update" method if your current firmware version is rc7-9 or 1.0-1.5, otherwise do:
- follow First-time firmware installation procedure instructions instead, and
- make full flash ERASE prior to firmware write operation, and
- disconnect any of I2C devices from ESP32's GPIO2 pad. See this ticket for details.
- S76G only: follow these instructions to update your Dongle Edition firmware. It is also recommended to reset your SoftRF Dongle settings back to factory default values by following this procedure.
Prime MkII, MkIII, Badge or Dongle owners! I will reject any claims if you, by any reason, will fail to upgrade or fail to recover after un-successful update!
If you are not sure that you can manage the update successfully - think about to stay on 1.5 or to buy a new board with pre-installed 1.5.1.