Unable to boot back into Spark after loading Enigma2

I have installed my own Zone 2 satellite, and I am using a Amiko Alien 2 sat box. I have just installed Enigma2. However, I cannot boot back into Spark. The receiver seems if it's going throught the motions of booting into Spark but then just goes into standby with the red led on. I can boot back into Enigma2 though.

How do I recover the box to have dual boot capabilites?

Cheers folks.

Hi Folks
I got this resolved by following page 2 of the URL below. I hope this may help others who may see this problem.