Presario 1260 bios upgrade (was: Upgrade to Win 2k or XP fails/hangs)

I know this is an old post, but for any other readers, I just
successfully installed w2k on a 1260, without any magic keypresses to
disable ACPI.. every time a reboot happened I had to switch off the
machine and let it cold-start, however, otherwise the screen would corrupt
and the machine eventually hang (which is probably demonstrating the ACPI
problem!).

However, I am seeing the hard drive spin down after about 60 seconds of
inactivity, regardless of sleep time settings in BIOS or control panel.
Earlier posts suggest this is a known problem with the 1260 and that some
BIOS upgrade fixed it. However, I can't find specifically a BIOS upgrade
at:

http://h10025.www1.hp.com/ewfrf/wc/softwareList?product=95003&lang=en&cc=us&lc=en&dlc=en&os=20

Does anyone have one?

(Another FYI for the archives: my floppy drive is broken. The ROMpaq for
the KBC/battery controller seemed to install fine by extracting
files from the disk image and booting Win98 to safe mode command prompt.
Hope I'll have as much success with the BIOS upgrade ;-)

 

No BIOS updates are listed for the 1260 for any OS on the HP site, as far as
I can tell. W2K was not a supported OS on the 1200s, so that is likely the
reason.
HH

 

Compaq support just told me the upgrade wasn't available, but some
wading reveals sp9678 on the FTP site, fixing the spin down problem. The
same update allegedly applies for many 12xx models. Hooray.

(But seems later BIOS upgrades to fix ACPI issues were never released :/.)

snip