AstroRunny

I did look at this guidance for updating / fixing the firmware. However it looks like I'd need a cable + custom serial/usb connector that I don't have & wondering if it's worth investing in given that the error message is no longer coming up when I boot up the telescope?

Wow ! Thanks so much for the quick response. I'll try out the above later and post back

Hi I have a Celestron Nexstar 4SE+ that I bought a few years ago. It's been in storage for a few months. This morning I tried to set it up again with a view to enjoying the sky tonight, and to my disappointment the motor is not working.... When I first powered on, it showed this error message: bootloader invalid package 0099 I powered on and off and now it loads up fine and goes into the alignment mode on start up. However the motors are not responsive at all when I use the arrows to try to do the alignment. I'm wondering if there is anything I can try to do to resolve this and/or if it's likely to the "controller card" that is the issue, broken motors or something else. If you have ideas of what I can try that would be great. Alternatively if you have could suggest a path to getting this fixed that would be much appreciated. Thanks so much With Kind Regards