Minimal OS Version is locked on my Ti-Nspire CAS with touchpad.

晓零辛纳

Today I found that the minimal OS version is locked down at 3.2.1785.But my OS is 3.1.0392!
I am not dare to upgrade my OS to 3.2 or 3.6 now.I am afraid that I cant downgrade my OS to 3.1.0392 again.
nlaunchy is also not work on my calc.
I can change and keep it before I reboot OS now.
Sorry for my !@#$ English and thanks to google translate.
@critor

critor

If you've currently got OS 3.1 then it's easy: install Ndless 3.1 and the nsNandMgr tool:
https://tiplanet.org/forum/archives_voir.php?id=10080

Run it, go to "Boot Data", and then remove or reset the minimal OS version. :)

critor

Sorry, misunderstood.

the "3.2.1785" string in nsNandMgr means 3.0.2.1785.
So nothing wrong with this.

晓零辛纳

critor 发表于 2013-11-11 22:15
Sorry, misunderstood.

the "3.2.1785" string in nsNandMgr means 3.0.2.1785.

Ok thanks,but...I cant remove protection by nsNandMgr.After nsNandMgr remove downgrade protection, the minimal OS is "0.0.0",but after a reboot,minimal OS will be restore to "3.2.1785".I dont know why.My touchpad is not a EVT or DVT.

critor

It's perfectly normal.

The OS checks the minimal installable OS version on each boot.

nsNandMgr has been designed to downgrade: you remove the minimal installable OS version and immediately install your older OS.