PinePhone won't boot

[bcnaz]

I received my Manjaro convergence PinePhone about a week ago.
It started OK.
But since I was not utterly satisfied with it, I wan ted to try Mobian/Phosh OS.
I then flashed a 32 GB microSD card with mobian-pinephone-phosh-20201113.img.
After installing the card above the SIM card, I tried to boot and it did not.
The green LED lighted up for about 3 second and then, nothing. The phone was dead.
To flash the card I tried dd, Gnome-Disk and Etcher. No success.
Without the SD card, it boots alright on Manjaro (eMMC) after a red LED light for about 3 seconds.
Any suggestion on what to try please to be able to boot from a microSD card on Mobian?

Strange,  Etcher has always worked for me.  Though I have only used it from a Linux operating system,
  I have heard some forum members have a problem using Etcher on Windows or Mac.

Also do not extract the image,  Etcher does this automatically itself...

While the Manjaro operating system is not one I personally prefer,
    the Manjaro edition phone runs both the Mobian and Arch operating systems very well.