The discussion focuses on flashing Magic Home devices equipped with the BL602 chip over WiFi without soldering, using the manufacturer's OTA mechanism redirected to a custom server. The procedure involves resetting the device to factory settings by cycling power, hosting the OpenBeken firmware OTA binary on a local HTTP server, and sending an AT command to the device to initiate the firmware download and installation. Users report success with this method on certain BL602 devices, notably Magic Home RGB controllers, using tools like netcat and PowerShell for serving the firmware and sending commands. Challenges include firmware version compatibility, with newer Zengge firmwares apparently patched against OTA flashing exploits, resulting in errors like "+ok=up_ErrType" or no response. Some devices require specific partition tables or flash size considerations (2MB vs 4MB flash). Debugging via UART logs is recommended to diagnose boot and WiFi AP startup issues. The community also explores similar flashing approaches for related chips such as LN882H, LN8825B, BK7231N, and XR809/XR872, noting differences in communication ports, protocols (JSON over UDP/TCP), and firmware architectures (RISC-V vs ARM). JSON-based command protocols on UDP/TCP ports (e.g., 5555, 6095) are used for device communication and OTA initiation in CozyLife and Ewelink devices. Some users successfully restored factory firmware dumps and then flashed OpenBeken firmware, achieving AP mode broadcasting. However, issues persist with saving settings post-flash and AP visibility. The latest OpenBL602 builds work on some devices but may require partition table adjustments. Overall, the OTA flashing method without soldering is feasible but depends heavily on device firmware version, chip variant, and correct command syntax. Physical flashing remains a fallback for patched or incompatible devices. Summary generated by the language model.
