Stubborn Stora (no replies)

Hi,

I hope anyone can help me to put one of my stora in right working order.

For the last three months I've been using one of my stora after having flash the last u-boot available from bodhi and updated the rootfs with 4.19 kernel files.
It was working untill last week, when the flash drive (I suppose that was the problem) started to make the system halt (I checked dmesg and I found that the filesystem didn't respond on time, many times)
So, I checked the filesystem in the usb flashdrive and I recreated it. I couldn't make the system boot.
I tried to use the backups of the kernel files, from 4.12 to 4.19... I checked and re-checked the environment variables values... I recreated three or four times the filesystem in the usb flashdrive... and nothing...
I'm starting to think about use the third newton's law with a hammer and the stora...

Please, can anyone give me a hint on how to fix this stubborn stora?

PS.: I've uploaded the complete (until it halts) bootlog, and the env variables archive. I have TTL serial access.