HP50g ROM Upgrade / Downgrade Question

[Gerald H]

(08-28-2020 01:55 AM)rprosperi Wrote:  

(08-28-2020 12:25 AM)0db Wrote:  Funny coincidence, I decided to start using my 50G again after a very long hiatus. I upgraded from 2.05 to 2.15, then back down to 2.10, all with the Connectivity Kit and Win 10. No problems, no data lost. Although the bit about holding [+] and [-] simultaneously, while pressing RESET in, is a bit of a gyration.

I downgraded from 2.15 to 2.10 to get rid of the SmartStream (StreamSmart?) app that automatically installs with 2.15. According to the description at hpcalc.org, the only difference between 2.10 and 2.15 is that app. But really, I need to learn how to delete apps ...

There were several other small bugs fixed in the final release (2.15) which were not public IIRC. But the primary reason to use 2.15 is that the VAST majority of users, that actually use their 50g, are using this ROM version, so it's best to be compatible when sharing programs or seeking advice/assistance.

As for SmartStream being present, it does not interfere with anything else, and is only accessible from the App menu, so just ignore it. There is no benefit to having the version without it, you don't gain any RAM space, etc.

Also note that you will find references to ROM version 2.16 in various places; ROM v2.16 is intended ONLY for emulators, and is functionally equivalent to 2.15 for real hardware units.

Didn't 2.15 remove the Geometry App?