: Use a USB-C cable to connect the charger to a Windows PC.
– Download and install the CP210x USB to UART driver (Silicon Labs). – Plug in the charger via USB → Windows should detect it as a COM port. Htrc T240 Duo Firmware Update BETTER
Updating is a straightforward "set it and forget it" process that takes about 45 seconds. : Use a USB-C cable to connect the charger to a Windows PC
: Select the downloaded .bin file in the tool and click "Update" . Htrc T240 Duo Firmware Update BETTER