Here is my save file and you can see in Sheila's alph the third egg disappeared. Also, after some time sparx will green at max and bosses are much harder than usual. The worst part is that everything will trigger randomly.
1 - I tested your game for a while, and it really has LibCrypt anti piracy and anti modchip protection, the strange thing that is not listed in REDUMP, there it is only listed as AntiModchip (which POPs ignores), and Libcrypt only in the PAL version. To play this game on a real console you will need a Stealth chip.
2 - I noticed that the problem is linked to the Save Game, even if I put the PSN version or 1.0 that are free of problems they still occur when loading the save game provided by you.
3 - I decided to play version 1.1 from the beginning without using your save, I played until the part where the balloon is ready to go without any problems until that point, I played a little more and nothing too, Sheila's egg did not disappear and no other part of the game's progress either, which according to this video, there should have been at least 3 problems but they didn't:
4 - Did you start this game from the beginning on PSVita or is this a save game moved to it?, if it is a savegame moved the problem could be this, the failures that occurred by the game started in an incompatible location are inside your load file (Save).
5 - If you started the game on PSVita it can really be a protection problem, if you want to play on the portable play version 1.0 or PSN which is also 1.0.
6 - Attempts to fix LibCrypt patches for this version of the game don't seem to work.
7 - Playing version 1.1 on emulators like ePSXe, Mednafen, DuckStation or a console with Modchip Stealth can give you a better experience.
Sorry for asking again, but any news on fixing Shadow Master for Vita?
Hi friend, I still haven't looked beyond what I've already described here.
Glad it worked.
About POPsLoader
All POPS working with PSP Fat, 2000 and 3000 3g
PSP 3000 4g and 9g (maybe all):
Every POPS from 3.02 to 3.52 WORKS
Every POPS from 3.71 to 6.00 DOESN'T WORK
Every POPS from 6.20 to Original from flash POPS WORKS
PSP GO:
Every POPS from 3.02 to 3.52 WORKS. Sound ONLY works with Headphones!!!
Every POPS from 3.71 to 6.00 DOESN'T WORK
Every POPS from 6.20 to Original from flash POPS WORKS
Remember only use POPSLoader if you are experiencing a problem with the game, if not just leave it at default (original from flash).
I don't know what version you use, but for me the v4i version on 3001 works fine.