Use a trusted LCR-T7 firmware link to download the .hex (flash) and .eep (EEPROM) files.
A specific GitHub repository for Markus's firmware, adapted for the LCR T7 (16 MHz, added rotary encoder), is available via scottmudge/ComponentTester-firmware . lcr t7 firmware link
Once the programming completes successfully, disconnect the ISP wires and turn on the LCR-T7. The new firmware will boot up and prompt you to run a self-test. Insert a 3-pin shorting bar into slots 1, 2, and 3 of the test socket to let the unit calibrate its internal resistance and capacitance offsets. Use a trusted LCR-T7 firmware link to download the
Look for the six small pads labeled VCC, GND, RST, SCK, MISO, and MOSI. You may need to solder header pins or hold pogo pins against them. added rotary encoder)