I'll give it a shot right now. I recall trying it in the past and didn't have any luck-but that was a year ago and things may have changed/updated.
Edit:
The LCD works fine on my Uno with this library, running your Diagnose_TFT_Support example.
This is the return on the serial console:
Diagnose whether this controller is supported
There are FAQs in extras/mcufriend_how_to.txt
tft.readID() finds: ID = 0x9341
PORTRAIT is 240 x 320
Run the examples/graphictest_kbv sketch
All colours, text, directions, rotations, scrolls
should work. If there is a problem, make notes on paper
Post accurate description of problem to Forum
Or post a link to a video (or photos)
I rely on good information from remote users