Lenovo Z410 InsydeH20 BIOS Recovery - how? filename?

No boot. No POST. Blank Screen. Power and Battery lights, and fans on. Last action before the problem, was running 8DCNWW40 BIOS update from Lenovo website. When this started about 2 months ago, it would boot up OK every 50+ tries. Now, I've been trying hundreds of times for 4 days.

When I ran Andy's BIOS tool, It suggested Zx10X64.F?
In platform.ini, there is AA and BB.

Before connecting AC, I hold down Fn+R, and when laptop powers up the battery light is orange blinking. The USB drive...

Lenovo Z410 InsydeH20 BIOS Recovery - how? filename?

Lenovo Z410 InsydeH20 BIOS Recovery - how? filename?