Jamara radio

Hello,

my son has a small Jamara helicopter (3 axis), but the remote is dead.

I have a T8SG for my models and I'd like to control that helicopter with it.

I contacted Jamara, and they told me the radio protocol is RSM, which is something I've never heard of.

Do you have any idea?

The model is a Jamara AS-4. (for which I can hardly find any info either).

Thanks