[Q] my prime is completeky empty, who to install?

I stupid did formatted my /data and /system on my prime.

It is now completely empty, i can get normally into recovery mode but cannot install any software at all.....

When i try install install from sd card it says simply: 'no files found'
I got an external SD inserted but this is not reqonized by fastboot recovery.

When i go to 'mounts and formats' the /sdcard /data etc is not mounted, when i use 'mount sd card' nothing happens, mostlikely because all is formated and there is no /sdcard found.

I booted into USB mode and uplaoded a CW rom into the drive which is mounted on my pc, created a folder called sdcard and place in there the CW mod, try to install it bu no succes. It simply does not see my sd card.

Tried: adb pusk cm.xxxxx.xip /sdcard, but get an error: closed

Simply i cannot install anything.

My question is:
- how do i access the external SD card where my rom is located to install?
- how can i recover the prime so i can use it again?