I'm the original poster and after some initial angst, I located the files, installed the new firmware, and the DP832 now sits proudly on the laboratory bench. A single-sheet of documentation included with the DP832, would have been of great benefit, if only to say "For latest release of firmware contact the nearest RIGOL sales office". I did attempt to use the online tool for requesting updates but it continuously hung up without any verification that my email was sent. My call to RIGOL NA the next morning was answered promptly and within two hours I had received an email with links to the software files and documentation.
As noted elsewhere, the install/upgrade documentation is misleading and incorrect. It was not clear when to press the 'Help' key during the initialization, though after a few attempts my best-guessing was successful. Remember to take the additional measures to update both analog boards.
I initially was interested in the DP1308A until I realized that you could not get three separate positive voltages whereas with the DP832 you can, and can link the two 30v outputs for positive/negative tracking voltages. I like the display, interface, and the construction/quality makes the DP832 a good bargain methinks.
The one issue is the quality of the buttons below the display. I am overly critical regarding buttons and mushy keys are an annoyance. I remember taking my HP35 calculator back to HP, three times, to get the tactile 'click' on all the keys. My DP832 has a key that works correctly but feels overly mushy. It's not an issue, considering the low-cost of the supply, and the fact that this key is so rarely used.
The firmware is now v01.08. I have no options installed. This release fixed the current/power resting values with no load, and occurrences where the rotary encoder would not change values on the first click.