No upgrades on software. As a matter of fact I think the source codes were lost a long time ago. The guy that wrote the stuff (Dave Cloud) is now or was working for EMI.
On the BOSS 9 the programs are in memory on the EZIO board which also bit-maps the CRT. It will hold more than it will back up with the batteries. But I thought it would come up with a program truncated error. In other words, if you fill the memory to the max and shut the machine off, the machine will not remember all that was in it. Clear everything. Tool table, TLOs, programs, etc and start from scratch. Are the 4 AA batteries fresh and alkaline? Otherwise you may have some memory that is failing you.