Sorry for the late response. I just tried with 'Ti_NspireCX_4.5.2.8.tco' but still shows the message "Operating System not found. Install OS now". Would you recommend what I should do now? :'( Tomorrow, I will receive the USB to TTL connector! Additionally, I could only see this file 'Nspi...

This time it says "[M7] You cannot install a version of the OS that is older than the currently installed version."
I'm gonna attach the video trying to update this time.
I share the video that I'm trying to install OS again.
https://youtu.be/SzePhw51D_8

Still nothing changes. When I boot with , computer software can't detect the calculator.

Is CX OS 4.5.0 different with 4.5.0.1180 that I tried before?
I could only see 4.5.0.845 and 4.5.0.1180 versions

Nothing changes. It still shows the red box when I boot using :nses: :nsme: :nsmo: buttons I know there are two ways of booting. The normal boot still shows infinite ask for installing OS and another one shows red box. I think I did something wrong when I set partition at first. So, it shows the red...

Does the calculator reboot after the OS transfer is complete? : Yes, it automatically rebooted after the OS transfer is complete but showed the same message. I also rebooted using the back button but it has the same issue. Which OS version and type (CAS / non-CAS) did you try? : I downloaded OS TI-N...

Very strange that you get the red X only when holding esc menu - . Anyway, people who get the red X but did accurately follow the rest our tutorial usually have to hold esc menu - to get at the "Operating System not found. Install OS now." screen. If they don't, they need the USB-TTL adap...

I tried to upgrade my Ti-Nspire CX to CAS and I bricked my calculator... I reboot both normal way and the other one using ESC+MENU+(-) but both methods are all bricked. When I normally press the reset button on the backside, it says "Operating System not found. Install OS now." At this tim...

Hi. It seems you tried to install nLoader, but didn't follow the instructions properly. You made an error when selecting the 2nd file to build the nLoader image, hence the red X. Try to : ⋅ hold :nses: :nsme: :nsmo: ⋅ without released the keys, press and release the reset button...

After I reset my Ti-nspire CX, it can't boot.
After showing "This calculator has been modified to enable CAS functionality. ~~", 'white X in red circle' popped up and loading percentage doesn't increase.
How can I figure this out??