Oh, I see. I must have missed that. I still have a question before I buy a USB to TLL interface. It might be good to know if 3.3V or 5V is needed. I think 3.3V, but where to connect the power source?Or is it not even necessary to connect a power source directly to the calculator? In the photo with t...

Thank you. Thank you. If boot2 4.4.0.8 also works, then I don't understand what went wrong. My calculator installs this version automatically whenever I select boot2 to start in ControlX. This might even be advantageous. What would happen during the installation of ControlX, if the boot1.5 version i...

Ok. Can you please tell me what's the difference to the old version? I can't find something like a changelog.

Thank you for your efforts. I will try to get an adapter and then connect it as shown in the photo. If that's really the only way. Actually I'm very interested in what went wrong there or what I did wrong. I've had problems with the diags on this calculator before and the boot logo was gone as long ...

Thanks for the answer. It makes no difference how I boot the calculator. Both boot attempts have the calculator hanging right here:

If the maintenance menu doesn't work you could try to use the diagnostics. You have to hold + + while pressing reset. After that it could work again.

Hello, I'm new here and have a very similar problem. My nspire CX (Hardware rev. O) is completely bricked! Apparently there are no diags left and the boot2 partition is not working either. I suspect that I need a USB to TLL to save that again. It happened when I tried to update ControlX from version...