Prototype TI-Nspire+ avec puce ASIC, le chaînon manquant !

→ **MyCalcs** profile · by **critor** » 23 Jul 2018, 09:29

No news about the ASIC Nspire+.

And according to the pictures in Adriweb's capture, it seems OS 1.1.4797 is lost forever :
viewtopic.php?t=21723&p=233967#p233967

He probably removed it through the maintenance menu to upgrade the P1R2 TI-XXXXXXXXX to a production model (which then can be resold at a normal price) by sending OS 1.1.9227 over USB and then installing Ndless.

But, like all versions below 1.1.8000, Boot2 1.1.4797 probably has no USB support.
OS 1.1.9227 has to be added a special header and sent to the J01/Dock serial port.

→ **MyCalcs** profile · by **parrotgeek1** » 23 Jul 2018, 09:44

critor wrote:No news about the ASIC Nspire+.

And according to the pictures in Adriweb's capture, it seems OS 1.1.4797 is lost forever :
viewtopic.php?t=21723&p=233967#p233967.

No, it's not. Read the post more carefully. "Par contre, une fois allumée cette machine nous accueille avec le message Factory image found. Press 'I' to install.
C'est-à-dire que son OS était préchargé en mémoire, mais pas installé."

→ **MyCalcs** profile · by **critor** » 23 Jul 2018, 09:47

As on emulators, this message is shown only once.

Factory images cannot coexist with a filesystem.
Once you press 'I' to install the OS, the factory image is gone.

And the message in Adriweb's capture clearly tells the CAS OS was then deleted for an upgrade attempt.

→ **MyCalcs** profile · by **parrotgeek1** » 23 Jul 2018, 18:07

That's unfortunate. I wonder if we could dump the nand and extract the OS even though the file has been deleted. It could still be there, just not referenced (like how computer data recovery tools work). If we launch an OS in test mode that has been TNOCed it shouldn't write to the nand at all. In which case we can write a program which (very slowly) dumps the nand over serial and run it using ndless.