You need to remove the magnet from the lid to do the swap trick with the lid off. It is that white round thing in the lid it just pops right out and when you are done slides right back in the hole. Just take note of which side is up. I use a felt tip pen to mark the top otherwise it will not hold the disc in place.
PS3 CECH-2501A [CFW] & CECH-3001 [OFW]/ PS2 SCPH-3901 & SCPH-7501/ PS1 SCPH-5501
Mod Cobra 4.46 v7.00 w/ E3 Flasher [CFW] & Cobra ODE 4.50 [OFW]/ Mod HDD-OSD [Phat] & Modbo 4.0 [Slim]/ Mod MM3
HDD 1tb [CFW] & 640gb [OFW]/ HDD 640gb & OPL v0.92 w/ 1.5tb SMB