Do not use HyperTerminal – it corrupts XMODEM on modern OSes.
The Olivetti PR2 Plus is a specialized passbook printer widely used in banking and financial environments. Updating the firmware is a critical maintenance procedure used to resolve printing anomalies, fix USB communication errors, add new emulation support (such as ESC/P or IBM), and ensure compatibility with evolving operating systems. Unlike standard desktop printers, the PR2 Plus requires a specific hardware-triggered sequence to enter "Download Mode" to accept new firmware. Olivetti-pr2-plus-firmware-update
Even experienced technicians encounter issues. Here is how to solve the most frequent errors during an Olivetti-PR2-Plus-Firmware-Update: Do not use HyperTerminal – it corrupts XMODEM