This is usually a hardware issue with the STM32 chip or a bad solder joint on the SD card slot. Try reflowing the slot with a soldering iron.
The firmware dictates which ECUs the tool can communicate with. It controls the communication protocols (K-Line, CAN-Bus, JTAG, etc.) and ensures that the reading and writing processes are safe for the vehicle’s delicate electronic control units. An outdated or corrupt firmware version results in failed reads, communication errors, or, in the worst-case scenario, a bricked ECU. Kess V2 5.017 Sd Card Image Download
8/10 Value for money: 10/10 (if you already own the clone) Safety for ECUs: 7/10 (always use a bench harness, never trust clone OBD fully) This is usually a hardware issue with the
The is not perfect, but it is the best free/paid firmware for clone Kess units. It transforms a $80 clone into a $1,500 tool for its era . Just remember: you get 2017 technology. For older ECUs, it's a 5-star hero. For modern cars, it's a paperweight. It transforms a $80 clone into a $1,500 tool for its era