Where can I get sim868 bluetooth support

I just want to test Bluetooth from sim868 bt none of the command of Bluetooth is working while searching i got firmware is not upgraded for Bluetooth support .
I saw your video for firmware update followed same procedure but that firmware is not correct version .
so how should go ahead ?

Hi Mangesh,
Please drop a mail to mahesh@sim.com. They should be able to help you get the right firmware.