Updated to 2233 firmwware.
1) First thing I noticed was some video modes are screwed.
Was previously using 1402 firmware, there was no problem with 720P 60Hz (Don't have FullHD display yet). Now with 2233 using 720P 60Hz gives me a 'flattened' pic with washed out colours and contrast. 480P 60Hz also the same although I don't use it. *(Aspect Ratio is set at 16:9).
2) Adjusting the screen size function absolutely doesn't do anything. Don't know why they put that feature in, if it doesn't do anything.
3) My old playlist becomes "invalid file" or something like that after upgrade. Deleted them and recreated them now OK already. Not an issue here.
4) Subtitles which was previously all ok at default settings , now some of them becomes really huge. Have to adjust them individually to smaller size. More work to do espc if you have a lot of files with this problem.
5) Last time when resume a movie after stopping can still resume with the previously chosen Audio and subtitles (I think) , but now when resume it goes back to default audio only.
Just a brief testing I did only. Haven't played around further. I dread what I might find further

. Can't revert back to original firmware as it would require reformatting the HD

Seems this new FW 2233 is still buggy....