[Nmweather]

While messing with some other issues I noticed that I have the LoRa radio set to 868 mhz, not the 915 used here in the US, so decided to update the software on the transmitter. I cannot get  v7.3_b005 to compile in IDE 2.0.2  (Mac OS Catalina) with the 1.6.21 board manager for Arduino Nano (I even tried the most recent version), I get the following error:
 

Code:

fork/exec /Users/user/Library/Arduino15/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++: bad CPU type in executable

Compilation error: fork/exec /Users/user/Library/Arduino15/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++: bad CPU type in executable

Any suggestions? Feel like I've dealt with this before but cannot remember what I did to resolve it,

Many thanks!

Zac

Edit: I tried compiling on Arduino IDE 1.8.19 as well and no luck.