Anyone knows how to update the UEFI firmware of a Surface 2 (RT) when the Internal battery is already dead? Battery shows as "not installed" or "0%, not charging"
It's a known issue on UEFI firmwares prior to v4.22.500 that the battery will not charge if deeply discharged.
Problem is, to install the UEFI firmware update the battery has to be at least 40% charged.
I have tried all the "unplug, hold power button for 20 seconds, plug in" and "Go to Device Manager, Uninstall "Microsoft ACPI-Compliant Control Method Battery" voodoo you read about on forums to no avail. The battery don't charge.
