Thanks. Would the dongle not add GPS and thus automatically tell the scope lat/longitude? Looking at the number of upgrades by celestron to firmware/software, I assume they have improved the system significantly over the last 5-7 years. Is this true? Many reviewers on amazon mention difficulty loading the handset firmware update and thus buy the dongle with some success.. Pretty sure I got the correct combination of cables (good lord, should have been in the original box!) to do it but before using them I'd like to know if the dongle is an easier way to "load" my scope. my understanding is that in the dongle configuration, the apps program does the work without the scope needing the algorithms therein? It amazes me that this is so difficult. I tinker with complicated audio equipment with fine and amazing adjustments (eg room correction software) without nearly the difficulty. Seems companies like Celestron are less consumer friendly than companies like Denon or even Yamaha in this regard. Perhaps the best option is carefully unboxing the dongle and using it with the free sky portal app (which i have and looks good). My understanding is that this is a stripped down version of another app from another developer. In your opinion, is that upgrade worth it? Also, does the dongle not id objects for the user during alignment? Thanks in advance.