[Q]Upgrading to O2E Baseband from OCE?

Perhaps I am just blind, but I haven't seen any information on how one upgrades their S6 from OCE to O2E basebands. After rooting with ping pong, I was considering that simply flashing a ROM based off O2E would be fine, but would rather not screw up since I got lucky with getting a device with a rootable build number.

Thanks for any help!