Forum TI-Planet.org

Good day!!!

I erased my OS 3.2.4.1237 trying to downgrade the OS, but I didn't backup, and it doesn't let me install a previous version, and this OS hasn't been launched officially on the web site, i would like someone who has this version to upload it, please.

Please, help me i have a very important test soon and need my ti nspire cx cas!!!!

Could you tell us which CX you have: CX CAS or non-CAS CX? The 2 OSes are different.
Did you try installing 3.2.3 (CX CAS or CX non-CAS)?

I have TI-nspire cx cas.

OK, then try installing 3.2.3 OS for TI-Nspire CX CAS

I already tried but came out a message "It can't install a older version that the actual"

I was thinking that if someone has the same version can make a backup of the OS, i know it can be do TI.nspire Computer Link Software and then upload it.

With the TI.nspire Computer Link Software make a backup and then upload and install it on my TI it but i need someone who own that OS to do it any other idea please.

Er... an anti-downgrade protection which forbids going back to any older OS version, including 3.2.3.1233 ??
Try using nLaunch CX, which doesn't care about CAS / non-CAS, anti-downgrade protection, or any of that crap: viewtopic.php?f=57&t=11019

I was thinking that if someone has the same version can make a backup of the OS, i know it can be do TI.nspire Computer Link Software and then upload it.

With the TI.nspire Computer Link Software make a backup and then upload and install it on my TI it but i need someone who own that OS to do it any other idea please.

Nope, we heard of this OS version a couple days ago, but haven't retrieved it somehow. However, nLaunch CX shall fix your calculator for your purposes... at least, if TI didn't upgrade the boot2 as well, in which case you'll have to use a USB / RS232 TTL adapter ($15-20 / €15-20) to reflash the boot2.

Please don't triple-post in quick succession, edit your message with an "EDIT" mark

Can you check your Boot2 version please?
Using the TI-Nspire Computer Link version, ask for informations in the tools menu.

Boot2: 3.24.4