[SOLVED] Reach stuck (solid magenta led) after failed update

I have bought reach in 2016 and everything is okay until today i perform update to one of reach unit. update process failed and after thats event, reach unit cannot function properly. i tried every way (reflashing firmware or trying to plug unplug reach) but no result.

led indicator showing solid magenta. reach unit cannot connect to pc with different port, different usb cable

please help maybe i can get solution. thanks

the left unit is error unit. meanwhile right unit still okay (green led)


i have re-read other thread and decide to use default pisen cable and its worked!
reach can connect with pc and reflashing done. case closed. thanks