Turns out, that I had not charged my main laptop for 8 months and the battery had sent my laptop motherboard into a self protective nervous breakdown and coma (it looked ropey last time I tried to charge it). Reviving the poor thing through electroconvulsive therapy would have required more than five minutes of extreme surgery to achieve (BIOS reset), so I turned to my much older, totally ridiculously microscopic Sony VAIO, but it's USB chipset was too old and the config program wouldn't even show some of it's user interface, such as the COM dropdown menu - Windows Home 7, I hadn't got around to installing Professional, and the BIOS on that miniature marvel has very few options for USB, too damn small for options - there are so many COMs in use on the VAIO nanobeast, that it only allowed me COM 26, which didn't connect when I navigated with TAB and spacebar to the button and dropdown, which I couldn't see. I had hoped to use a laptop so that I could tune it up while testing settings on the road, but alas, I was forced to drag the bike over to my PC.
I installed the driver first, before plugging in the USB cable, switched off and disconnected the bike battery, disconnected the C18 controller, connected the USB lead to the newly vacant green controller connector, reconnected the battery and switched it on, and then connected the USB cable to my PC which installed from the recently installed preinstallation, and ran the Bafang config program - it found the right COM straightaway. Then I read the current motor firmware settings, saved those somewhere safe and I was finally FREE! FREE TO KILL MY MOTOR!
I avoided the two buttons on the bottom right, because of the scary skull and crossbones.
It's odd that the battery protection was set at 31, is that enough? I've left it for now.
No sign of password reset - that must purely be set on the C18 controller, which is pants ! Pants security! Unless that part of the motor's firmware is hidden.
This doesn't run on Macs, which proves they're rubbish.
I left the throttle at 17km/h... because I'm scared of my bike. No - it's because I don't use a throttle. And I'm scared of my bike.
After midnight, the road outside swarmed with rozzers, because of intermittent heavy snow with persistent gusts of Tier 4. Can't testily test. Sad.
Hope my bike doesn't lock itself down while I'm in the middle of nowhere, demanding a Bitcoin ransom...