www.makemkv.com

I just bought a Verbatim 43888 that is based on the BU40N.

I just read a couple of posts here and I'm not sure if I can safely downgrade my drive to 1.04 from 1.05. From what I found, the latest MK firmware is based on the firmware 1.04. I wonder if other users have a similar drive and were able to easily downgrade it.

I got the the command line command at hand, I just want to know if I should do it and if I can expect it work?

Thanks in advance! I've found very valuable information so far in this community.

PLEASE IGNORE THIS POST: found answer in other threads. Yes, it is possible to downgrade.

SalsaForte wrote: ↑

Wed Jan 21, 2026 3:52 am

I just bought a Verbatim 43888 that is based on the BU40N.

I just read a couple of posts here and I'm not sure if I can safely downgrade my drive to 1.04 from 1.05. From what I found, the latest MK firmware is based on the firmware 1.04. I wonder if other users have a similar drive and were able to easily downgrade it.

I got the the command line command at hand, I just want to know if I should do it and if I can expect it work?

Thanks in advance! I've found very valuable information so far in this community.

Don't post the same question in multiple threads! Your other post been answered.

Yes. Sorry.
I wanted to delete my post... But I have a user issue: I don't know how to delete a post.