There isn't a GBA EverDrive X7, and and the EverDrive GBA Mini (formerly the X5) doesn't support on the fly cheat codes. Your only real option for this flashcard is to go the old route of patching the codes into the ROM. I think this software will do it, but I've not tried it myself so your mileage may vary:
https://gbatemp.net/threads/gba-auto-trainer-maker-gbaatm.99334/
Unfortunately there's no plans for an EverDrive X7, which is why the X5 was renamed to avoid confusion. It's a great card, but I would've definitely got another if it supported cheats and save states. Maybe time to look beyond the EverDrive! I believe the EZ-Flash Omega works with these features?