Hi, I got new GEM45 last week with firmware(210105). I wonder which iOptron I should select. If I select ioptronv3 driver, GEM45 is able to slew. If I select GEM45 indi driver, it get error
GEM45 driver exists a delay after I press slew button, ioptronv3 driver move smoothly. Someone from iOptron tell me that indi maybe work well with new firmware(210105). These Indi driver may need to update for new firmware. Is GEM45 drive don't support new firmware instead of ioptronv3 driver?

I updated the INDI drivers so that GEM45 now uses iOptronv3 driver. Please check the updated version.

krno, it’s only the latest firmware that requires v3 driver. Since the majority of GEM45 currently use the old firmware, making v3 the default driver may create issues for the majority of users. Is it not possible to make two GEM45 aliases, such as GEM45_v2 and GEM45_v3?
Thanks

Can the older CEM40/GEM45 use the updated firmware?

Honestly I did not try, and did not check the command sets either. My doubt arose because ioptron says to use two different version of iCommander for old and new firmware

Good call... I can revert the changes and add two more entries for the new firmware... but IF it is possible to update the firmware on the older models by a software update then it's better to ask the users to update and reap the benefits of the new firmware.

@rishigarrod has upgraded GEM45 to new firmware. You can give it a try.

Ref: indilib.org/forum/mounts/8815-ioptron-ge....html?start=24#67312

All seems to be working again now so I can give it a go.
I will need to build it first for the RPi4 or can someone give me the lib?
I don't want to load the nightly build as I want to keep my setup stable.

Given that according to firmware history there is no major benefits with the new one, I would assume that user with a working setup (as myself) would be reluctant to apply the update so early...so in my opinion at least for the moment the double option would be better. Then when it will be clear that the new firmware has no major issue, indi may default to v3.

Just tested the the V3 driver and it connects, slews and parks!
This is great news that the parking now works. You can now set your own parking position with the handset and when you select Park in Indi it goes to that position.