After performing the 1st dump of a TI-Nspire CAS+ OS in may 2012 (http://ourl.ca/16005), then (http://ourl.ca/16080) making those OSes installable, and finally performing the 1st dump of a TI-Nspire CAS+ Boot1 in a previous news (http://ourl.ca/17328), today is another great day in TI-Nspire CAS+ history!
The first dumping of a TI-Nspire CAS+ Boot2 has finally been performed, with Goplat's help!
The dumped Boot2 version comes from the P1-EVT2 CAS+ datamath.org which was running OS 1.0.1.0.334T, and doesn't display the usual Nspire logo but a Texas Instruments logo.
(http://tiplanet.org/forum/gallery/image.php?mode=medium&album_id=1&image_id=792)
The Boot2 image doesn't use the "JBOOT2" header from later TI-Nspire, but a "HBOOT2" header:
(http://i43.servimg.com/u/f43/13/23/13/53/capboo10.png)
This 'H' was already noticed (http://ourl.ca/16005) in the OS header "HPHOENIX"
There is no Boot2 version string - the only hint being the build date:
(http://i43.servimg.com/u/f43/13/23/13/53/capboo11.png)
Let's have a look at the system strings:
(http://i43.servimg.com/u/f43/13/23/13/53/capboo12.png)
We can confim that only 2 boot key combos are checked by the Boot2:
- (http://tiplanet.org/forum/images/smilies/nspire/nsmep.png) (http://tiplanet.org/forum/images/smilies/nspire/ns_en.png)(http://tiplanet.org/forum/images/smilies/nspire/nsx.png): launches an OS image without installing it - OS has to be sent through RS232 - option removed on TI-Nspire CX/CM
- (http://tiplanet.org/forum/images/smilies/nspire/nsmep.png) (http://tiplanet.org/forum/images/smilies/nspire/ns_en.png) (http://tiplanet.org/forum/images/smilies/nspire/nsp.png): what became later the maintenance menu but it's no menu at all on CAS+ - removes the OS without asking you to confirm - dangerous
The method uses the RS232 Datalight console, disabled on later models.
(http://tiplanet.org/forum/gallery/image.php?mode=medium&album_id=1&image_id=795)
But even if such method cannot be reused to dump later CAS+ Boot1/Boot2 versions, the P1-EVT2 CAS+ prototype has now given us everything it could! ;D(http://www.omnimaga.org/Themes/default/images/gpbp_arrow_up.gif)
Yes: OS 1.0.1.0.334T + Boot1 + Boot2 - we've now got a full set of compatible CAS+ software elements, meaning that we can start being serious! ;)
To be continued... ;)
Source:
http://tiplanet.org/forum/viewtopic.php?t=10663