Where is the Pinephone eMMc?

[7horns7eyes]

Reflashing the PinePhone is pretty much straightforward, just boot it from a Micro SD card and use "dd" to write the same image you initially wrote to the Micro SD card to the phone's eMMC.  You really don't need any fancy utilities to do all that.

Hi! I am a very, very new in linux. (please forgive me that)

Can i ask you please, if it is not so hard to do, to write here step by step how i can "write the same image i initially wrote to the Micro SD card to the phone's eMMC." using terminal in OS on the PnePhone.
I can work with terminal in Plasma OS( installed on sd card ) , but i afraid not to create another mess. 

I use Win32 Disk Imager before to install OS, but now it not "see" eMMC anymore to put OS .
When i install jumdrive to sd card, put in the phone , OS(not matter which), can be installed only on the same SD card, because eMMC is not visible to  Win32 Disk Imager after Ubuntu touch.(this is what i mean- i hope i explain right and not to talk stupid things)

So i see it is time for me to learn how to flash this "invisible" eMMC( for Win32 Disk Imager) using terminal where eMMC is visible.

Also if there is any way to make eMMC visible for Win32 Disk Imager again, will be good, because i am curious how this work.(i suppose i must format eMMC in any way, but i still don`t know how).

Name in terminal of sd card is mmcblk0 ( it is7.4gb)
partitions:
mmcblk0p1
mmcblk0p2
Name in terminal of eMMC is mmcblk2 ( it is29.1gb)


Thank you!