The JAM is a plugin, and can be installed on any image, and most probably the image you have is one that MastaG created with the Japhar Team few years ago, based on the Kernel 2.6.

The JAM is not exclusively working on Japhar images, it's a Plugin that has many tools inside that can be used with any images.

TS
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DM8000, DM800se, DM500HD, DM800HD, DM7025, DM7020s, DM7000, DM500s
VU+ Solo, VU+ Uno, VU+ Duo, Kathrein UFS910
Tivusat, TNTSat, Fransat, SSR/TSR, BBC1-2-3/ITV
DE-OpenBlackHole 1.4 image : http://www.openblackhole.com/