as always,kozarovv to the rescue.
thanks again,will test and report ASAP.
edit:
renamed it to opl091 and opllast (both bin and cue files) and ftp it to the PS2ISO folder on my internal hdd.webman MOD sees both bins and is able to mount them but right after playstation2 logo it freezes on black screen/prompt to press PS logo on controller.same thing happens with both bins/versions.
IRISMAN doesn't see the bins.
edit2:
tried with straight copy without renaming,same symptoms.
edit3:
edited that uLaunch iso vith opl 091.elf from official github (regular version),it boots,can as instructed here go to cdfs: it seed the opl elf,when launched again it goes to blackscreen and freezes.