I--- Yeacomm P21 Firmware Update [updated] -

| Error Display | Likely Cause | Solution | |---------------|--------------|----------| | "i---" after normal flash | Power loss during write | TFTP recovery (see above) | | "i---" + blinking power LED | Wrong hardware version | Find the correct firmware using SN | | Update hangs at 99% | Corrupt download | Re-download .bin, checksum verify | | LCD shows "i---" then reboots loop | Bootloader mismatch | Requires serial UART recovery (advanced) |

Click to select the firmware file (often in .bin , .tar.gz , or .tar.lzma format) you previously downloaded from the Official Yifan Wireless Download Center. i--- Yeacomm P21 Firmware Update

Look for names like P21_V1.2.3_EC20.bin or P21_Cat4_20240115.bin . Avoid files named update.bin without version numbers. | Error Display | Likely Cause | Solution

The in my headline? That’s the moment you see Idle or Initializing on the status page. That’s the router’s cry for help. The in my headline

When the screen shows (or sometimes "i" followed by dashes), it typically means: