Boot mk602 from sd card

[Dreamo]

Greetings,

i am trying to compile and boot mk602 with custom kernel with dvb-t support. I have compiled the kernel and packed it to update.img alongside with other images from device (system, boot...)

Is there any way to boot this custom firmware from sd card without flashing the original on device?

Any help would be apprieciated

Regards

Dreamo