Im so sorry for the loss .Well, just booted into region free emunand (didn't press L when loading profile) and start playing my retail pokemon X game on emunand 7.1
After playing, I opened the Settings app (of the emunand) and I press X to quit.
Then BSOD. It didn't quit the settings app and go back to 4.5 NAND: bricked after pressing X in settings.
I precise that I have no GW clone.
So I never used any clone firmware.
Only official GW's firmware and the region free patched FW
Region free patched launcher is not safe
But it seems you used something that isn't provided by Gateway, but a user-modified version...
So as far i see it, Gateway is still safe to use .