This is how you flash to eMMC easily

[colin hodsdon]

What if you have a UBports version that quit booting?  You can't get jump drive on the phone.  I'm admittedly  NOOB,  but am using my PBPro to try and get a bootable micro SD card to boot the phone from.

put Jumpdrive on an "sdcard"(with Balena_Etcher ) put that in your phone, then connect it to your PC , (then your PC can see the EMMC)  then flash the copy of Ubports that you previously downloaded and extracted on your PC,with Balena-Etcher , but read the drive its going to write to carefully, sometimes it shows the sdcard with jumpdrive on it as well as the emmc, choose the correct one ,

if you make a    bootable sdcard,  it will try to boot that    sdcard,    not the phone emmc

---

What if you have a UBports version that quit booting?  You can't get jump drive on the phone.  I'm admittedly  NOOB,  but am using my PBPro to try and get a bootable micro SD card to boot the phone from.