It's very hard to tell with those photos, really. However, the fact that you're 0/3 wiis after trimming tells me you're clearly missing something or not following the steps correctly. Did you check the resistances of all the voltage lines to ground and each other before soldering anything? you mentioned on a post that your multimeter broke, did you manage to get a new one? If not, I'm not sure how you plan to pull this off without a multimeter... We could help you troubleshoot but if you're not able to give concrete answers like "there's a bridge here" or "my resistances from 3v3 to ground are this or that" etc it's going to be impossible to determine what's going on. Specially without detailed photos.
Before spending money on the aliexpress roulette for a (hopefully) working trim, try tofigure out a way to take better picutes.
EDIT: just to check, you did install RVLoader and patched out bluetooth and wifi before trimming, right?