"It’s asking us to define the cores," Aris said, her eyes widening. "The old firmware treated them as one entity. The new firmware... it knows they’re separate."
Connect the charger to your PC via a high-quality micro-USB cable while the charger is powered off. Update Mode: Htrc T240 Duo Firmware Update
Before starting, you will need:
“I was terrified of bricking it, but the step-by-step YouTube guide paired with this process made it easy. My only hiccup was finding the right USB driver. Once that was fixed, smooth sailing.” "It’s asking us to define the cores," Aris
: Do not disconnect the USB cable or power down the charger during this phase to avoid bricking the device. " Aris said