Right... new firmware installed... lets see if it fixes the problem.

If anyone wants some help on linux, this is a simple recipe.

1. Umount all filesystems that are using the NVMe (if its boot one, then you will need to boot via another USB pen)
2. Download the ISO from samsung (wget )
3. Mount -o loop SAMSUNG.iso /mnt
4. mkdir /tmp/firmware; cp /mnt/initrd /tmp/firmware/samsung.gz
5. cd /tmp/firmware; gunzip /tmp/firmware/samsung.gz
6. cpio -i -F /tmp/firmware/samsung
7. cd /tmp/firmware/root/fumagician; ./fumagician
8. Update the firmware following the instructions and then reboot

Any questions bug me...