Alright here are the upres patches. Due to the fact that RPGM games are not resolution responsive, but rather hard-coded to a specific resolution, you should pick the patch based on the screen resolution you are using. If you play the game with the 1080 patch on a 768 screen, the game will probably go off-screen or do other weird stuff.
One known issue is that the preview images in the gallery are bugged. Also didn't upscale the main menu background image, so don't let that throw you off.
To install the patch just override the www folder inside the game folder with the one in the archive. This should override a bunch of encrypted image files and a single js-file.
Obligatory disclaimer: I take no responsibility for damage caused by this patch. Use at your own discretion.
1080 Patch
768 Patch
Archive file password