PKHeX.Mobile VS NieR.Automata.Editor

Here's the link to the GitHub: https://github.com/kwsch/PKHeX.Mobile

Now there is a Android port for PKHex that has been abandoned, but probably would work for USUM. You have to build it yourself. Here is the link to that: https://github.com/kwsch/PKHeX.Mobile

Haven't used this myself since I don't play on mobile, but here's the official github by Kaphotics.

https://github.com/kwsch/PKHeX.Mobile that might work, but I can't guarantee because I use my computer

Sarcasm aside, I don't have enough free time to manage all the projects I've created. Nobody has contributed to the PKHeX.Mobile project besides me, and I'm not too familiar with mobile development & app stores.

What you can try is: start new game on the new crack and play until you can save, and save. Then use this save editor to take note of the steamid64 embed in the new save. Then copy your old saves in the new save folder, and use the save editor again to modify the steamid64 of these old saves to match the one you took note of previously.

to add onto the replies you've got now: a quick search for a save editor gave me this tool to set your XP (and by extension, level) to whatever you want, in case you want to put yourself back at-level without grinding up to 99 and hoping you can get through that one hell-arena