[gps-talkusers] Resets

Hi All,
I was very glad to learn that the July 29 chat topic was to clarify the various BN resets. However, I was unable to attend in real time. I just finished listening to the audio file and find that I still have questions. 

Reset alone was well described and I am very comfortable with it.
Reset with SDF in my case was also well described and I now understand it much better.
Reset with JKL is still a mystery to me. The BN help index indicates that it is to be done when the BN memory has been corrupted. What would be the indication of that? That is, how is that different to the end user from the BN not acting as expected or not responding? That is the indication for the regular reset. If one does a reset with JKL, is there a chance that updates or external programs such as the Oxford Dictionary or the GPS program would need to be reinstalled?
I think the confusion for me has been that the BN manual indicates that the SDF reset takes the unit back to the factory default. It doesn't explain to my satisfaction that the regular reset brings the external programs and BN updates since the factory installation back into play. It was here that I learned this important detail.
If the BN crashes such as mine has done frequently, in what order should the resets be tried?
I have had to go so far as to do a reset with the record button to get my unit back on its feet. There have been a few times when even that has failed and the unit has had to be shipped for repair.
I know that this is not related specifically to GPS, but since a chat session was to be devoted to it, I thought it might be appropriate to ask these questions here. 

Thank you in advance for any clarification.

Joleen

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