Nokia Lumia 520 Error: Unable to find bootable option … STRANGE


I Have strange problem. Any Skilled player that may help.

2x Lumia with same problem – Unable to find bootable option …

1st
Flash with JTAG – OK
Flashed with ATF – set 100%

2nd
Flash with JTAG – OK
but still Unable to find bootable option …

I didnt post logs because as i say 1st recovered in easy way so there is no mistake from mine side. Both are Samsung emmc.

If need log i will post