| Revision | ICs (Chips) | USB Bridge | Repairability | | :--- | :--- | :--- | :--- | | | ATmega162 + 24C64 | CH340/FT232RL | Easy – full bootloader access | | Rev B (Common) | ATmega162 + 24C128 + 74HC125 | CH340G | Moderate – needs ISP programmer | | Rev C (Locked) | ATmega162 + epoxy blob | Direct MCU | Hard – may need MCU replacement |

If you're experiencing issues with your VCDS HEX V2 clone, there are a few possible repair options:

instead of the genuine STM32 or Atmega architectures, it is often unrepairable. These "fake clones" (clones of clones) are usually "one-time programmable" and cannot be reflashed once the software blocks them. Do you have a specific error message

Integrated verified bootloader images