Update [new]: Htrc T240 Duo Firmware

Insert the card, then hold the POWER button for seven seconds until the screen flashes.

A: Yes. You will lose your saved memory slots (e.g., "Battery 1: 5000mAh LiPo"). Write them down before updating. Htrc T240 Duo Firmware Update

to a Windows PC using a high-quality USB-C cable via the port on the side of the charger. Insert the card, then hold the POWER button

Inside, you should find: