Not able to flash custom rom without losing imei

[Ace android]

Hi, I have a problem in which I keep losing my imei number everytime I switch from my stock rom, when I flash back my stock rom (p905), imei reappears and is back to normal. I really want to switch rom as I'm really tired of kitkat, all the other threads didn't work, that's why I'm asking now, any suggestions? Thanks in advance

 

[akhilashokk]

Losing IMEI is probably due to a bad flash. Try to adhere to the steps mentioned by the dev of your custom ROM. Take a backup of your EFS folder before flashing, if you lose your imei after flashing then restore this folder it will bring back your imei number. Also you can write your imei number back in your phone using adb.