Thnak you for this great Forum, it is very useful.
I have a problem with the L89, I have bought the L89 installed on Click board from Mikroelectronika.
I connected it to my MCU and also terminal program
I’m receiving data from it but when i send any command without checksum it never respond, when i add the check sum and send any command with checksum it only reply with one respond $PAIR001,000,4*3F
I can not upgrade the firmware by booting or normal upgrade.
below is the data send from the module when I power up: