To ensure a smooth firmware update process:
The printer will print its configuration, including the current . Troubleshooting Tips Olivetti-pr2-plus-firmware-update
| Symptom | LCD Message | Root Cause | Solution | |---------|-------------|------------|----------| | No response to XMODEM | WAITING HOST | Wrong cable (straight instead of null-modem) | Swap pins 2 & 3 | | Blocks retransmit loop | RETRY n/10 | Baud rate mismatch or noise | Drop to 4800 baud, retry | | "Invalid file format" | FILE ERROR | File renamed from .FUT to .BIN | Keep original .FUT extension | | Printer stays in FUT mode after reboot | FUT READY loop | Corrupt bootloader | JTAG recovery (requires hardware programmer) | | CRC mismatch at block 127 | BAD CRC | USB-serial adapter dropping bytes | Use FTDI-based adapter, lower baud to 2400 | To ensure a smooth firmware update process: The