Help needed: Bricked A6 v1.3 board - Printable Version +- Smart Home Automation Forum (https://www.kincony.com/forum) +-- Forum: Technical Support (https://www.kincony.com/forum/forumdisplay.php?fid=20) +--- Forum: KC868-A6 (https://www.kincony.com/forum/forumdisplay.php?fid=22) +--- Thread: Help needed: Bricked A6 v1.3 board (/showthread.php?tid=8974)

Help needed: Bricked A6 v1.3 board - schma - 01-30-2026 Hi everyone, I'm seeking some technical advice on reviving an A6 v1.3 board (ESP32-based). The situation: The board was running ESPHome perfectly. However, following a Wi-Fi AP migration and some "beginner mistakes" within Home Assistant, I’ve lost all connectivity to the device. The problem: No OTA: Since the Wi-Fi credentials are now incorrect, I cannot access it over the air. Serial flashing fails: I am unable to upload new firmware via the onboard USB port. Hardware status: The onboard USB-to-Serial chip seems functional (it's recognized by the OS), but there is zero communication with the ESP32 SoC itself. It won't enter bootloader mode or accept any flash commands. My questions: Is there a way to "force" this specific board into flash mode if the auto-reset circuit is failing? Can I bypass the onboard serial chip and flash the SoC directly using an external FTDI programmer? If so, does anyone have the pinout for the RX/TX/IO0/EN pads on this v1.3 board? Are there any specific recovery tools or "low-level" utilities (besides esptool.py) that you would recommend to "wake up" a non-responsive ESP32? I would appreciate any tips or schematics to help me save this board! Thanks in advance! RE: Help needed: Bricked A6 v1.3 board - admin - 01-31-2026 install USB driver firstly , then download firmware by USB-C cable. here is USB driver: https://www.kincony.com/download/CH341SER.zip RE: Help needed: Bricked A6 v1.3 board - schma - 01-31-2026 Thanks, but the driver is fine—I’ve already programmed a replacement (the exact same model) with it since then, and for the first time ESPHome needs wired connection. RE: Help needed: Bricked A6 v1.3 board - admin - 02-01-2026 tell us your order number, which store you bought. RE: Help needed: Bricked A6 v1.3 board - schma - 02-01-2026 Pm sent RE: Help needed: Bricked A6 v1.3 board - admin - 02-02-2026 your order number is not our official aliexpress store. our official aliexpress store is : https://kincony.aliexpress.com/store/1100463977 you can contact the seller re send you a new A6 pcb. they are our agent.