| Error Message | Meaning | Fix | | :--- | :--- | :--- | | "File Mismatch" | The firmware is for a different model. | Triple-check your model number. The FTP folder names are often cryptic (e.g., R6 platform vs R7 platform). | | "Upgrade Failed" | Language pack mismatch. | Your device is a Chinese hacked version. You cannot use Global FTP files. | | "Invalid Signature" | The .dav file is corrupted or not signed. | Re-download from FTP. Ensure binary mode is ON in your FTP client. | | "TFTP Timeout" | The device isn't requesting the file. | You need to short the serial pins or use the RS-232 console to force TFTP recovery. |
| Error Message | Meaning | Fix | | :--- | :--- | :--- | | "File Mismatch" | The firmware is for a different model. | Triple-check your model number. The FTP folder names are often cryptic (e.g., R6 platform vs R7 platform). | | "Upgrade Failed" | Language pack mismatch. | Your device is a Chinese hacked version. You cannot use Global FTP files. | | "Invalid Signature" | The .dav file is corrupted or not signed. | Re-download from FTP. Ensure binary mode is ON in your FTP client. | | "TFTP Timeout" | The device isn't requesting the file. | You need to short the serial pins or use the RS-232 console to force TFTP recovery. |