Is BeagleBone_Black_Extracting_eMMC_contents method not working anymore? (2020-Q3)

Is BeagleBone_Black_Extracting_eMMC_contents method not working anymore? (2020-Q3)

I’ve been using this procedure https://elinux.org/BeagleBone_Black_Extracting_eMMC_contents with no problem for years, using both BBB or BBB Industrial indistinctly.

However, nowadays (I mean with last BBB I bought (2020-Q3)), it does not work anymore (no backup-creation nor backup-restoration).

I have no clue why it happens (maybe some breaking changes in BBB hardware or BBB booting procedure. I don’t know).

Any help will be appreciated. Thanks.