STEP 0: your Xbox Original should be soft- or hardmodded
STEP 1: Create empty folder and
for original PC, PSX and Sega Saturn CD version owners
copy data from your CD into [your_folder]
(! to extract content from PSX CD images please use this tool
https://github.com/m35/jpsxdec !)
for ported android version owners
unzip data file /sdcard/obb/com.squareenix.tombraider1classic/main.42.com.squareenix.tombraider1classic.obb into [your_folder]
for Steam/GOG version owners
go to ..\Steam\steamapps\common\Tomb Raider (I)\ and run dosbox.exe
enter these commands
mount C .
imgmount d ".\game.dat" -t iso -fs iso
xcopy D:\DATA\ C:\DATA\
after that you'll get level files in the new "DATA" folder copy them into [your_folder]
for advanced users
copy all game folders into "[your_folder]/"
copy audiotrack files (track_*.ogg, track_*.mp3) into "[your_folder]/audio/"
STEP 2: copy default.xbe into [your_folder]
STEP 3: copy [your_folder] into Games directory on your Xbox via FTP client
STEP 4: reboot or refresh list of games and run OpenLara from dashboard games section