About Olga Flow's flowen/aura mode

[REIA]

First off, thanks for your help guys I can now have the PSO fun again (Although is not the official server, but oh well, FREE GAMEPLAY )

Well I don't usually try to solo Olga Flow but I tryed today with my HUne lvl 131 in Ult, the battle went really well except that for first time I never seen that his Flowen convert/Aura mode never fades, I used to wait for it fades since I tried both TECH and normal attacks and cant inflict damage. Is there anyway that you can damage it or revert that mode without the need of scape dolls in soloing?

My current equips for this battle since I don't carry more than 5 weps are:

Holy Ray+40(Is a must for me against Olga)
Jizai+40(Can 5K damage in charged rage, perfect when Im between Olga's Feets)
Double Cannon(With good % stats)
Daylight Scars+25(I use them to kill Sinows in the way =D)
Charge Vulcan+25(I got no more grinders =P)

I think I may need another type of weapon, specially those elemental damage inflicting but I truly dunno how to defeat it without using dolls.