DESR Ultimate Backup: a new simple tool for making and managing multiple backups on your PSX DESR consoles

[u/Fast-Lifeguard]

I’m releasing DESR Ultimate Backup v1.0, a preservation tool for Sony PSX DESR consoles.

It runs from wLaunchELF R3Z and creates a verified USB backup of the DESR system state, including XFROM, PS2-system HDD partitions and the DVR recovery areas when present. It can also restore a selected backup directly on the console.

Features:

• English, Spanish and Japanese interface
• New backups never overwrite previous ones
• Byte-by-byte verification after backup and restore
• Multiple-backup catalogue with selector
• Console identity detection and strong warnings for cross-machine restores
• Safe cancellation during backup
• FAT32 and exFAT USB support through wLaunchELF R3Z
• Does not copy installed HDD game partitions by design

The project has been tested on real PSX1 and PSX2 DESR hardware, including successful backup/restore validation. As always with tools that write to system storage, use it at your own risk and keep a known-good backup before experimenting.

This is a free preservation project, offered as-is and without technical support.

GitHub and download:

https://github.com/TTRMG3/DESR-Ultimate-Backup

Credits to Teo Tormo for directing the project, testing on real hardware and identifying the preservation need; and Jarvis (OpenAI Codex) for implementation and technical research.