I cheked many times before all the points that you suggest, anyway i checked again (I really want to get this working).
I can miss something but i tried many many options.
I format all usb devices from lubuntu machine with:
sudo mkfs.ext4 /dev/sdb1
And Gtparted say only one partition.
Today, when i was launching all the boot images again with a litle hard disk attached, i found one detail that i didn't realised before:
-With boot image mmcblk0p29.img there are some messages before the boot process crash whith my USB2 external hard disk attached on usb port near Hdmi conector, is recognised during boot process like "sd 0:0:0:0:[sda]" , and after there is message that say: "Assuming drive cache: write through sda: sda1", but the strange thing is that with "sda1.img" there is no message regarding to hard disk detection, only the "EXT-4 (sda1): error loading Journal" message.
-Note:This model only has two usb ports, no sd , no mini usb.
ID of my device is: tegra210-darcy-p2894-0050-a04-00.dtb.
Sorry about my english.
Make sure there is no bad sector in that hdd. When I searched the error message "EXT-4 (sda1): error loading Journal", many threads I found suggest corrupted disk. Corruption could be either the image file or the hardware disk itself. So, I'd suggest re-doing from scratch, downloading fresh new files, with a different drive.
* and sorry I forgot 2017 version didn't have micro-usb. Maybe I was confused with Pro version.