The best way to upgrade to take the copter that is working with Copter-3.5.7 and simply load Copter-3.6.0 on it. Done this way, any required parameter conversions will be done for you and I think you’ll find the upgrade is totally painless.
We will be doing a soft launch of 3.6.0 later this week (unless something unexpected happens) and I’ll include the list of parameter changes in that release.
For this release we are leaving the default as NuttX but ChibiOS is an option. From 3.7 onwards ChibiOS will be the only option for the Pixhawk family of flight controllers.
I don’t think I’ll be making a recommendation on whether users should use ChibiOS or Nuttx in most cases. Without a doubt the ChibiOS build perform better but as you say, it’s not as mature as NuttX so although we don’t know of any critical issues with ChibiOS, we could find some more as the number of users increases.
Randy…Sorry for this stupid question. but I upgraded to RC12 which I think took me to Chibios. If I want to stay with it with the new release is that easy to do, will it ask. sorry I am more a hardware guy the firmware.
Normally the MP asks on each upload whether the users wants the ChibiOS build. I think during each upload the user must press “Yes” or “OK” when asked that question or it will revert to NuttX.
We actually tested the dual GPSs (Here+ & Here2) blended under Copter 3.5.5, which worked great but does not provide the GPS time. I posted this question here and someone informed me that the GPS time will be available at Copter 3.6.