Also, a third-party fork called T7-Plus is adding Bluetooth data transmission – but this requires soldering a HC-05 module.
Before you begin the flashing process, it is vital to know what is under the hood. Most LCR-T7 units are built around the Atmel ATmega324PA or ATmega644 microcontroller. Some newer clones use different chips like the APT32 or LGT8F328P, which may not be compatible with standard open-source firmware. lcr t7 firmware
Your firmware was compiled for the wrong display driver. The LCR-T7 uses either an or ST7735 controller. Recompile with correct DISPLAY flag. Also, a third-party fork called T7-Plus is adding