Do you still have it?
You might just have one with an on-board USB stick which is user-replaceable. Literally a USB stick in a USB type A port.
It seems that was the only part they cheaped out on, since it failed for multiple people I know that have models with the USB stick.
Source: erlite-3 wouldn't boot up, changed usb stick (with their downloadable OS image of course), good as new.
Bonus: quadrupled the available storage.
I'm going to try to replicate notifications and stuff using Home Assistant and shut off the remote access completely, but I might as well have purchased a cheaper and better NVR + camera setup if I need to set up all of this stuff myself anyway...
We were using Nest before and these would be huge UX downgrades for my not-tech-savvy spouse.