I tested rom for one day and i found small bugs:
1) When i flash FF there is no RIL but audio works,but when then flash baseband the ril works,can send message but audio dont work and cant call.
2)The wallpapers is always in low quality.
3)When i restart phone some settings not save and reset,like like time,keyboard settings
No need PC, I just copy rom to sd and flash it from recovery. If you have Firefox now and want to back to cm or other rom just go to recovery and recover you backup and then flash a baseband for your region