I have the first generation Helix 12 CHIRP SI GPS and it doesn't have CHIRP Imaging, just CHIRP 2D sonar.
The first generation Helix 12 models were the only Helix models with any CHIRP of any kind.
CHIRP Imaging did not happen until the G2 and G2N Helix models. Every one from the Helix 5 through the Helix 12 got CHIRP sonar and CHIRP Imaging.