Converting SRM back to save files for mupen64plus standalone

So I’ve been wanting to play Zelda OOT & MM on N64 for both my home computer (running RA) and my Nexus 9 (running RA and mupen64plus standalone)

I’ve been able to convert the save file in for MM from *.fla (mupen64plus standalone in lollipop) to *.srm (RA 1.3 for Windows) using this tool:

https://twitter.com/heuripedes/status/664025412247359488

this is the only tool i’ve found to make good new srm files from mupen64plus standalone files.

however: the issue is, when i want to convert the game BACK to playing on the nexus running mupen64plus, a simple rename doesn’t suffice.

given that there are many many (many) threads on here about how RA 1.3 can’t really run mupen64plus, can the devs point me to a file converter in the meantime?

much appreciated!