samsung galaxy ace GT-S5830i with cm11 rom getting blank screen on simcard

Recently installed custom rom cm11-delicious-mountains.

http://forum.xda-developers.com/gala...tains-t3189341

after the installation with out sim its boot and shows UI.

WITH SIMCARD "SHOWS BLANK SCREEN"!!!!!!!!!!

Cont go to download mode to revert to stock rom, i have install CWM recovery, i don't know how to remove this and get stock recovery.

all suggestion on odin which i cont run due to CWM recovery which wont allow download mode.

PLEASE provide the solution for "GT-S5830i" not "GT-S5830"