AltairDuino 680 Firmware Date?

Tom Lake

unread,

Dec 13, 2025, 3:29:26 AM (4 days ago) Dec 13

to Altair-Duino

In the text on https://adwaterandstir.com/install-680/, the firmware data is listed as updated on 12/7/25 but the ZIP file has a date of 10/5/25. Are the 12/7/25 files available anywhere?

Chris Davis

unread,

Dec 13, 2025, 10:50:23 AM (3 days ago) Dec 13

to Altair-Duino

If you look inside the zip file you'll see that altair680.bin is dated 12/7/2025.

Tom Lake

unread,

Dec 13, 2025, 10:55:20 AM (3 days ago) Dec 13

to Altair-Duino

Nope:

Chris Davis

unread,

Dec 13, 2025, 11:26:42 AM (3 days ago) Dec 13

to Altair-Duino

That is the correct number of bytes, What application are you unzipping with?

Screenshot 2025-12-13 at 10.25.24 AM.png

Chris Davis

unread,

Dec 13, 2025, 11:37:47 AM (3 days ago) Dec 13

to Altair-Duino

Here's what I found after digging way too deep into this rabbit hole:

Your extraction method is not preserving internal ZIP timestamps.

The common cause is “Extract All” in Windows Explorer where behavior depends on version. Some Windows builds apply the ZIP file’s timestamp to extracted files (like yours) while some use per-file ZIP timestamps (like mine). Apparently this is a known Windows issue.

Tom Lake

unread,

Dec 13, 2025, 11:50:07 AM (3 days ago) Dec 13

to Altair-Duino

I use 7-Zip. I guess it has the same flaw as Windows itself. Sorry for the confusion!

Chris Davis

unread,

Dec 13, 2025, 12:05:36 PM (3 days ago) Dec 13

to Altair-Duino

That's funny because the general consensus in posts about it was "Use 7-Zip, not Windows Explorer".

Tom Lake

unread,

Dec 13, 2025, 10:00:54 PM (3 days ago) Dec 13

to Altair-Duino

LOL! For me Windows Explorer shows the proper dates and 7-Zip doesn't. I use Win 25H2 26220.7344

Reply all

Reply to author

Forward