If you can’t find version 6.85 from an official source, consider moving to the latest release — it likely includes critical security patches.
: If you have a TL866CS that you hacked/converted to a TL866A (to enable the ICSP port), v6.85 may detect this and refuse to start. Community tools like Radioman's Firmware Updater (v2.51) minipro 6.85 download
: Ensure you're downloading the software from an official or reputable source. This reduces the risk of downloading malware or corrupted files. If you can’t find version 6