Nevertheless, I have noticed that the last two ones I flashed (I only have one available, I gave away the other one) do not "keep the data", I mean, I flash them, and set up a wallet with the recovery words, the PIN, and so on... but once turned off and on, you have to enter all the words again... Have any of you guys experienced that? I am on 1.0.29 firmware.
P.S: I even wrote a post on this topic, and made a guide, in fact I made some ammendments and tricks on top of the videos the OP made. For instance, in some cases I did not get the bootloader prompt, but there are some commands to enforce its flashing. https://hideyourkeys.io/cheap-hardware-wallet-below-diy-guide/
Is it the new 'stateless' mode where it acts like SeedSigner(another DIY project) so every time you turn off the device, it forgets things.