Hi again
It seems your model is built for Canada. I could find it on the Canadian Toshiba site.
No information about revisions information of the BIOS in your model was provided though.
However, as it seems many hardware platforms are similar, however NOT always compatible, I looked at the US web which more generously provides revision information for the BIOSes and I found the BIOS which probably is similar or related to your BIOS, and there are in fact some battery-related fixes.
Have a look here: Link:
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=2726536&rpn=PSAW3U&modelFilter=A660-BT2G22&selCategory=2756709&selFamily=1073768663#
So this is a tricky case.
You may need to update to solve a problem with the battery but the update refuses because the battery does not have the proper energy level.
I suggest You ask your ASP / support for help with this!
BR
Tom