Can I rewrite a non-bootable eMMC from the PBP itself?

[Arwen]

For others that may be reading this thread, here is a reference to the eMMC disable switch;

Wiki - Pinebook Pro - Key Internal Parts

Eventually we will get a clearer idea of how to use the eMMC disable switch. I vaguely recall someone saying that you start the PBP with the eMMC disabled, wait a few seconds, and then switch it back to enabled. Thus, you would be able to boot off a SD card and then fix the eMMC. Requires the bottom to be open... but better than a brick :-).