Ok, a friend of mine just tested it and he was able to get some of the games working with Dremshell on the serial port.
Here is a package with the covers and with the ISO ready to work on the serial port. Just extract it in the root of your SD Card:
Faster Than Speed: http://www.mediafire.com/file/e8gpgdztq ... o.rar/file
KOF XI: http://www.mediafire.com/file/n6bk10afg ... o.rar/file
Samurai Shodown VI: http://www.mediafire.com/file/8d1lekust ... o.rar/file
Faster Than Speed (WideScreen): http://www.mediafire.com/file/c4zz6d80l ... o.rar/file
KOF NeoWave: http://www.mediafire.com/file/0ct9ypgel ... o.rar/file
Demolish Fist: http://www.mediafire.com/file/lpvr8dvj0 ... o.rar/file
Knights of Valor: http://www.mediafire.com/file/zdsqeezlh ... o.rar/file
Hokuto no Ken: http://www.mediafire.com/file/jy7flxsqv ... o.rar/file
Guilty Gear X 1.5: https://drive.google.com/file/d/191KhlX ... qmPeb/view
The Rumble Fish: https://drive.google.com/file/d/16Zuwbv ... OfKgG/view
The Rumble Fish 2: https://drive.google.com/file/d/1B3_J0x ... gsaxq/view
Guilty Gear Isuka: https://drive.google.com/file/d/1LzkQxn ... J2qA5/view
Sushi Bar: https://drive.google.com/file/d/1P9lA_V ... xaURZ/view
Maximum Speed: https://drive.google.com/file/d/1xIxpvi ... CKhly/view
Dolphin Blue [With Fix for 3rd Stage]: https://drive.google.com/file/d/1SQMpFq ... VqhNt/view
Dirty Pigskin Football: https://drive.google.com/file/d/1Rm7yq4 ... gCWoL/view
Force Five: https://drive.google.com/file/d/1pKRuek ... zMd4D/view
Sushi Bar -> 0x8cfe8000, Async 8.
Guilty Gear Isuka -> 0x8cfe8000, Async 8.
The Rumble Fish 2 -> 0x8cfe8000, Async 8.
The Rumble Fish -> 0x8cfe8000, Async 8.
Guilty Gear X 1.5 -> 0x8cfe0000 Async 8.
Demolish Fist -> 0x8cfe8000, Async 8.
KOF XI -> 0x8cfe8000, Async 8.
KOF NeoWave -> 0x8cfe8000, Async 8.
Samurai Spirits -> 0x8cfe8000, Async 8.
Faster Than Speed -> 0x8cfe8000, Async 8.
Knights of Valor -> 0x8cfe8000, Async 8.
Dolphin Blue -> 0x8C000100, Async 8.
Hokuto no Ken -> 0x8cfe0000 -e 8 -a -f.
NeoGeo Battle Colliseum -> 0x8CFE8000, Async 8.
Metal Slug 6 -> Doesn't work for now.
Maximum Speed -> 0x8C000100, Async 8.
Dirty Pigskin Football -> 0x8C000100, Async 8.