Omnimaga

Calculator Community => Other Calculators => Topic started by: critor on May 01, 2011, 09:28:56 pm

Title: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: critor on May 01, 2011, 09:28:56 pm

I've been asked for information several times here.


So if you've installed the 3.0 Nspire OS with the 3.0 Boot2, here's my step by step how-to in order to remove the 3.0 Boot2 using a TTL<->USB adapter and then downgrade your OS.
http://ti.bank.free.fr/index.php?mod=archives&ac=voir&id=3503 (in french)

You've got lots of photos, schematics, logs, captures and links.


Feel free to report any error.

If someone wants to translate/adapt in english, just ask me for the editable file through PM.

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: DJ Omnimaga on May 02, 2011, 02:25:20 pm

Nice tutorial critor! HOpefully someone can translate it in english for the non-visual people. Hopefully the pictures should help a lot, though.

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: C3N on May 02, 2011, 04:17:34 pm

thx a lot...
my friend has searched sth. like this =)

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: critor on May 04, 2011, 01:09:27 pm

Here is a 2nd tutorial I've made in order to repair TI-Nspire calculators bricked by the 3.0.1 OS.
http://ti.bank.free.fr/index.php?mod=archives&ac=voir&id=3507 (french)

The required hardware is the same, but the actions are not in the same order and a little different too.

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: DJ Omnimaga on May 26, 2011, 02:12:38 am

Cool, thanks for this. SHould be useful in case someone installs OS 3.0.1 but forgets about the bug.

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: Proger10 on September 02, 2011, 11:50:13 am

I have installed OS3 and now I want to install OS2. My french so bad. But I understand that I should:
1. Install OS3 without boot2
2. Install old version of boot2 via UART.
3. Install OS I want via USB(TI Computer Link)
(Am I right?)
I have done 1 and 2, but I cant install OS2 because "You cant install OS older then installed now". At this moment I have TI Nspire CAS with:
1. boot1 version: 1.4.8916.
2. boot2 version: 1.4.1571
3. OS version: 3.0.2.1791

What do I should do to install OS 2.x?
PS Sorry for my english.

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: calc84maniac on September 02, 2011, 11:58:35 am

Here, try DowngradeFix (http://ourl.ca/11607)

Title: Re: [Howto] Downgrading TI-Nspire 3.0, the hard-way
Post by: Proger10 on September 02, 2011, 12:42:55 pm

Thanks a lot! It have helped me.