I have not tried to update the ESC, I have only been on a few times to play with the settings. Honestly I will probably not update unless some great new feature is added. I love the way my EZRun controllers drive right now.

I buy anything Hobbywing from Hobbypartz.com. These guys want our business; so of course they are doing everything they can to give great customer service and answer any questions. Hell, with the friendly responses I have gotten, I bet they would answer your questions even if you didnt buy from them.

You really get screwed when you buy from the no-name Ebay sellers. They care not where your product is going or what happens to it at any point after the sale.