There was some hint on the The Making of Star Wars: The Empire Strikes Back (Enhanced Edition) eBook that there are some rare videos too, so I hoped that there is at least one with Boba Fett... Here is a summary of this release:
Thanks to Locitus for pointing me to this facebook account which has this video (taken from the eBook) ==> Silent video from pre-Empire releaseThis enhanced eBook transforms The Making of Star Wars: The Empire Strikes Back into an immersive multimedia experience worthy of the original film. It features exclusive content pulled from the Lucasfilm archives by author J. W. Rinzler:
• 28 minutes of rare behind-the-scenes video*
• 29 minutes of rare audio interviews with the cast and crew
• New bonus photos and artwork not found in the print edition
In this lavish thirtieth-anniversary tribute to the blockbuster film Star Wars: Episode V The Empire Strikes Back, New York Times bestselling author J. W. Rinzler draws back the curtain to reveal the intense drama and magnificent wizardry behind the hit movie — arguably the fan favorite of the Star Wars Saga.
What we can see in that video is the first public appearance of Boba Fett (in the Pre-Pro #1 suit), more exactly from September 24, 1978 at the San Anselmo Country Fair parade.
Some interesting facts just by looking at the video:
1 - The jetpack is still working, and when I say still, I'm talking about the Supertrooper jetpack that was converted to the Pre-Pro #1/Pre-Pro #3 jetpack:
2 - The hose connector (the one attached to the right gauntlet) looks like an unpainted Supertrooper connector, while the hose is in the loose position, more exactly it is not inserted through the jumpsuit sleeve:
3 - The wookie braids are on the wrong side - the left shoulder:
4 - The left gauntlet is still hold in place/closed with black duct tape:
According to the aforementioned book, Duwayne Dunham was in the Boba Fett suit; he was also the one who wore the Supertrooper suit at Park House:
The day of the test, Dunham exhibited Fett’s wrist flamethrower, which ILM had rigged up - unfortunately, his arm caught on fire because of a propane leak and that idea was scrapped. The CO2 cannister in the jetpack worked fine, though.