701 BIOS Upgrades?

[jones@pyrrhus.pgh.pa.us (David Jones)]

Folks:

     I (or rather my wife) have a 701C 24 MB/540 MB.  Warp is the OS
of choice.  I am impressed by the "Butterfly", for what it was
designed, namely a sub notebook, it does a good job; it is a pity that
IBM decided it was obsolete.  My question:

     The BIOS version is BUTUS2T.  There are more recent versions and
I was wondering what, if any, problems are corrected by them?

Thanks,
David Jones