So I just saw that there is a patch for KotOR 1 to v1.03 and I was wondering if this version is compatible with Flawless Widescreen. I don't even find any information of the patch on GoG...
I tried it on GOG KOTOR 1.03.
It "works". In that you get widescreen resolution support.
But it is flaky as hell IMO, but that isn't Kotor issue, it's a FWS issue.
You need multiple restarts for it to take effect. Sometimes it still comes up not quite right.
Even when I got it to work, my game went from completely stable to crashing and corrupting save files.
Eventually I deleted everything FWS and Kotor, and reinstalled KOTOR Clean, and it went back to be a stable game that I could play.
Widescreen is a "nice to have" features, but it isn't worth trading it for hassles/crashing/corrupt saves.