About lenschanger not booting I noticed some modchips can cause it to crash...
the best way to use lenschanger is a memorycard exploit with PS2MENU-K installed. Use that to boot lenschanger with the modchip disabled or disconnected .... I had issues to boot lenschanger with Matrix Infinity if a boot menu program (PS2MENU-K, for example) was used. The elf crashed before starting the graphics screen. that happened on V9/V10 for me but ya know .... I can say it might happen on other PS2 models. with MC exploit it's 100% boot rate and it even have a bonus of enabling you the possibility of repairing unmoded PS2s
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)