Yo tyrannomon, trainer I know where u find unimon.
When you have cenarumon in the city go to mount panorama spore area and you should find a wounded unimon.
Talk to it and give it one of your recovery items such as a small recovery floppy and it will join your crew and will work in the item shop.
If you need more help, we've got more Digimon World cheats and also check out all of the answers for this game
Comments for this hint