Post LG G2 D802 calendar application

Hello,

I have Lg G2 D802.. One week before , I changed my firmware to [SIZE="5"]flex 1.5 firmware.[/SIZE] I am satisfied with its good performance. My only problem was the original stock calendar application was showing HIJIRI dates also along with Grigorian dates. The new flex rom calendar does not show Hijiri dates. Can there any way to download the [SIZE="5"]stock calendar and then replace the flex calendar for my phone [/SIZE]. Kindly help me