Hey guys, over the last few weeks I've been working on adding support for compressed ISOs on Open PS2 Loader in the ZSO format.
While the project is still in beta, the results so far are incredibly positive, with ZSO games working 100% perfect on internal HDD, and many games now running perfect on USB devices.
I've tested the following games on a Fat PS2 over USB:
https://docs.google.com/spreadsheets/d/1K7szQS_9VG8es22eORw3xXTXxp5bZRpHOL6YJDH7S6c/edit?usp=sharing
Comparison of ISO and ZSO performance in the same USB device (an external SSD):
ISO: https://drive.google.com/file/d/1O7EGH1cO09SexxgyfadjHJrUvIR0kkAu/view
ZSO: https://drive.google.com/file/d/15E_9sWO_eNHl52XDjOpBIueADcZ9_ZwY/view
The more people help test this, the faster we can fix issues.
Download:
https://github.com/ps2homebrew/Open-PS2-Loader/releases/tag/latest
Always Download the latest OPL builds from the Official OPL Github Release Page.
LATEST UPDATE:
A new build with exFAT support is now available on the Official OPL Github page.
Compressing ISO to ZSO:
In the download package you can find a python script to compress ISO images to ZSO.
You need to install Python 3 and the lz4 library (pip install lz4), then use command line:
python ziso.py -c 2 "input.iso" "output.zso"
While the project is still in beta, the results so far are incredibly positive, with ZSO games working 100% perfect on internal HDD, and many games now running perfect on USB devices.
I've tested the following games on a Fat PS2 over USB:
https://docs.google.com/spreadsheets/d/1K7szQS_9VG8es22eORw3xXTXxp5bZRpHOL6YJDH7S6c/edit?usp=sharing
Comparison of ISO and ZSO performance in the same USB device (an external SSD):
ISO: https://drive.google.com/file/d/1O7EGH1cO09SexxgyfadjHJrUvIR0kkAu/view
ZSO: https://drive.google.com/file/d/15E_9sWO_eNHl52XDjOpBIueADcZ9_ZwY/view
The more people help test this, the faster we can fix issues.
Download:
https://github.com/ps2homebrew/Open-PS2-Loader/releases/tag/latest
Always Download the latest OPL builds from the Official OPL Github Release Page.
LATEST UPDATE:
A new build with exFAT support is now available on the Official OPL Github page.
Compressing ISO to ZSO:
In the download package you can find a python script to compress ISO images to ZSO.
You need to install Python 3 and the lz4 library (pip install lz4), then use command line:
python ziso.py -c 2 "input.iso" "output.zso"
Last edited by Acid_Snake,