After rejoining the hobby after a long hiatus I figured I'd update the firmware on my Mamba Max and Mamba Monster. First issue, my Mamba Max wouldn't recognize. When I plugged in the USB cable into the built in slot it never lit up or did anything. I tried blowing it out, etc. Nothing.

It worked just fine a few years ago and has only been ran twice since the last time I hooked it up to the link.
The Mamba Monster updated but somehow got switched to brushed mode and I didn't notice. Was at the track the other day and I put my batteries in and gave it some throttle and all I got was a blip and then nothing. Seemed like a locked rotor. I hadn't run it since the firmware update so I guessed it was a glitch and figured I'd look at it when I got home. I noticed the battery wires were a bit warm when I unplugged everything (they are NEVER warm), so that had me a bit concerned.
Finally plugged it in cause I was going to revert firmware to see if that would fix it and then I saw it in brushed mode.

Fixed that and it seemed to work fine on the bench (and I expect it will work just fine on the track again).
Also, I have another question regarding the Mamba Monster 2. Is it crucial/required to run the fan on it? The fan on my original MMM pretty much never turns on...and neither does the one on my MMP. Assuming I don't gear it to the moon, is it ok without the fan? Input appreciated.
Either way...love my Castle stuff. The only ESC's I own and will own in the future as far as I can see. (Though I noticed you guys just discontinued a bunch of your boat stuff...I was looking for a tiny boat to run in my pool...and think your new Hydra ICE was overkill - are you guys coming out with replacements anytime soon?)