It could be have been some mistake in choosing the aroma selection when you did the initial flash.
Flashing the wrong kenel will screw up your wifi internet. Not the boot.
I do not know the firmware of your phone. You mentioned that you flashed MDL then flashed NC1. You mentioned that you used safestrap. Then again you odin the AMDL .
In the Aroma selection, the first page is for choosing the phone. If you did the wrong selection in that page you could get the boot error.
If you did wrong In the safestrap advanced wipe page, you could get the soft-brick due to the file corruption.
Thanks for your info. Now I'm not able to install any rom from safestrap. I always get message saying ZIp failed and when I reboot it just stays on the boot screen. Again I have to ODIN stock rom and root it and install safestrap everytime. But when I got to recovery and install, I get the same error as failed. Not sure what I'm doing wrong. I wipe everything except sd card in the advanced wipe page. I have tried it on NB1 stock rom, it didn't work. Then I took NI1 update and tried but it failed again.
From your message it looks like I messed something in the advanced wipe page and corrupted some file. Please help me if i'm missing any step as I really like this ROM and cannot run stock rom with all the bloatware.
Did you flash the rom very recently? It takes a little time for the system to settle down. You could also try a battery calibration script or let your phone die completely then charge it while its off to 100%.
The huge battery drops could also be caused by some app. Install better battery stats and see whats eating up your battery.