I think your last message was a question to Lukas, so I didn’t follow up anymore.
I’m not sure what you need help with or if everything is resolved? What do you mean by “How do I get on the eMMC flash”? Do you mean to ask how you can boot the Pocket Reform from eMMC without an SD-card? If yes, then yes, you can either follow this: Deleted the emmc partition or try using the reform-flash-rescue script which should amount to doing the same.