Default Downgrade Within Same Firmware Version?

Hi guys

Knox tripped and on 4.3 bootloader for the N7105.

I'm wondering if it's possible to "downgrade" from a later 4.3 ROM to a previous 4.3 ROM. More specifically, the latest France one to the Three UK one from a couple months back?

Cheers

Sent from my Nexus 4 using Tapatalk
Current Devices: Samsung Galaxy Note II, LG Nexus 4

Previous Devices: HTC Wizard, HTC Kaiser, HTC Touch Pro 2, HTC Desire Z, iPhone 3G, HTC Mozart, HTC EVO 3D, HTC Trophy, iPhone 4, HTC One S, iPhone 4S