bricked boot2

→ **MyCalcs** profile · by **contax9** » 19 Feb 2022, 16:47

Hello,

I tryied to upgrad my Ti Nspire cx to the cas version and failed. I followed the tutorial with needeles.
At the end it only shows that I have to install an OS, what always failed.
So I looked for a solution and connected an arduino with ttl to it.
I said my Boot 1 was loaded, but Boot 2 stuck at I dont know 19 % or so.
I tried all hot key combos I found in this forum, but nothing worked.
So I tried to flash a new boot2.
It doent look like it works:

Code: Select all: "Boot Loader Stage 1 (3.00.99) Build: 2010/9/9, 17:29:13 Copyright (c) 2006-2010 Texas Instruments Incorporated Using production keys Last boot progress: 65 Available system memory: 33196 Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) SDRAM size: 64 MB External Power Detected: VBUS. SDRAM memory test: Pass Clearing SDRAM...Done. Clocks: CPU = 132MHz AHB = 66MHz APB = 33MHz Clearing SDRAM...Done. Clearing SDRAM...Done. Boot option: Normal Loading BOOT2 software... 20%Error reading/validating BOOT2 image Error loading BOOT2, looking for pre-installed images. Checking for DIAGS image in pre-install area. No DIAGS image found. Checking for BOOT2 image in pre-install area. No BOOT2 image found. Error loading BOOT2, install new version. Checking battery level. Battery level is OK. Ready to download BOOT2 software... Begin XMODEM file transfer.

Do you have any solution for this?

Best regards

Contax

→ **MyCalcs** profile · by **critor** » 20 Feb 2022, 11:37

Hello.

Your Boot2 has been wiped out or corrupted. You need to reinstall a Boot2 image through XMODEM as prompted.
Here is the TI-Nspire CX Boot2 4.0.3.49 for example :
archives_voir.php?id=481757

→ **MyCalcs** profile · by **contax9** » 20 Feb 2022, 14:51

Hello Critor,
yes, that is exactly what Im trying.
I already tried following versions:
tinspirecx_boot2_4.4.0.8.img.tns
tinspirecx_boot2_4.0.3.49.img.tns
tinspirecx_boot2_3.1.0.16.img

All with the same output, what I posted earlier.
Okay, there is one diffrence, the "20%Error..." changed to only "Error...".

→ **MyCalcs** profile · by **critor** » 20 Feb 2022, 15:08

But what's the output during the transfer, and immediately after the transfer completes if it does ?

→ **MyCalcs** profile · by **contax9** » 20 Feb 2022, 16:42

Code: Select all: Boot Loader Stage 1 (3.00.99) Build: 2010/9/9, 17:29:13 Copyright (c) 2006-2010 Texas Instruments Incorporated Using production keys Last boot progress: 65 Available system memory: 33196 Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) SDRAM size: 64 MB External Power Detected: VBUS. SDRAM memory test: Pass Clearing SDRAM...Done. Clocks: CPU = 132MHz AHB = 66MHz APB = 33MHz Clearing SDRAM...Done. Clearing SDRAM...Done. Boot option: Normal Loading BOOT2 software... 20%Error reading/validating BOOT2 image Error loading BOOT2, looking for pre-installed images. Checking for DIAGS image in pre-install area. No DIAGS image found. Checking for BOOT2 image in pre-install area. No BOOT2 image found. Error loading BOOT2, install new version. Checking battery level. Battery level is OK. Ready to download BOOT2 software... Begin XMODEM file transfer. Erasing old BOOT2 image. Updating BOOT2 image. BOOT2 image has been updated. Restarting now. Clearing SDRAM...Done. Boot Loader Stage 1 (3.00.99) Build: 2010/9/9, 17:29:13 Copyright (c) 2006-2010 Texas Instruments Incorporated Using production keys Last boot progress: 65 Available system memory: 33196 Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) SDRAM size: 64 MB External Power Detected: VBUS. SDRAM memory test: Pass Clearing SDRAM...Done. Clocks: CPU = 132MHz AHB = 66MHz APB = 33MHz Clearing SDRAM...Done. Clearing SDRAM...Done. Boot option: Normal Loading BOOT2 software... Error reading/validating BOOT2 image Error loading BOOT2, looking for pre-installed images. Checking for DIAGS image in pre-install area. No DIAGS image found. Checking for BOOT2 image in pre-install area. No BOOT2 image found. Error loading BOOT2, install new version. Checking battery level. Battery level is OK. Ready to download BOOT2 software... Begin XMODEM file transfer.

Thats one update cycle with restart.
The interesting part for you is:

Code: Select all: Begin XMODEM file transfer. Erasing old BOOT2 image. Updating BOOT2 image. BOOT2 image has been updated. Restarting now. Clearing SDRAM...Done.

What looks okay. But as you can see it boots without recognizing the new installed bootimage.
The screen on the CX half black half red screen with "Ti- nspire" logo the loading bar jumps to round about 60% and in the left bottom corner is a gear with a yellow "!".

For your information, the cables are soldered to the cx, I think I cant provide a better connection than this.

→ **MyCalcs** profile · by **critor** » 20 Feb 2022, 16:45

Ok thanks, no error reported. It might indicate a faulty Flash chip.

Try to hold

during a reset. The calculator should attempt to boot the diags partition instead of the boot2 partition.

→ **MyCalcs** profile · by **contax9** » 20 Feb 2022, 16:49

Code: Select all: Boot Loader Stage 1 (3.00.99) Build: 2010/9/9, 17:29:13 Copyright (c) 2006-2010 Texas Instruments Incorporated Using production keys Last boot progress: 65 Available system memory: 33196 Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) SDRAM size: 64 MB External Power Detected: VBUS. SDRAM memory test: Pass Clearing SDRAM...Done. Clocks: CPU = 132MHz AHB = 66MHz APB = 33MHz Clearing SDRAM...Done. Clearing SDRAM...Done. Boot option: Toggle Diagnostics Loading DIAGS software... 99% BOOT1: loading complete (392 ticks), launching image. Boot Loader Stage 2 (4.4.0.8) Build: 2016/8/10, 16:32:3 Copyright (c) 2006-2016 Texas Instruments Incorporated Using production keys Clocks: CPU = 132MHz AHB = 66MHz APB = 33MHz Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) This device has Napoca. Initializing graphics subsystem. Boot option: Toggle Diagnostics Initializing filesystem. Datalight Reliance v2.10.1150 Copyright (c) 2003-2006 Datalight, Inc. Datalight FlashFX Pro v3.00 Build 1358 Nucleus Edition for ARM9 Copyright (c) 1993-2006 Datalight, Inc. Patents: US#5860082, US#6260156. FB NAND Flash Controller Filesystem ready. Purging temporary files... Loading Operating System... Error loading OS image. Removing OS remnants. Waiting for OS download. Starting Connectivity services. Initializing USB subsystem...Done. USB Download is enabled

Bat. is a bit too weak,accept it was powered via cable all the time. What os should I install? I want it to be a normal cx. And shall I send it via Ti-nspire link or is there a way for ttl?

→ **MyCalcs** profile · by **contax9** » 20 Feb 2022, 17:17

So I tried to send 3 diffrent versions via TI CLS:
TI-NspireCX-4.0.3.29.tco
tinspirecx_4.5.0.1180.tco
tinspirecx_4.5.3.14.tco

In the ende of the transmission there is always an error that I cant install an older OS than the present OS.

No error in the ttl connection.

→ **MyCalcs** profile · by **critor** » 20 Feb 2022, 18:02

Ah, you've got a working Boot2 in the diags partition and reached the OS install screen, great.

If OS 4.5.3 was rejected, then the only choice left is to try OS 4.5.4, and then if it still doesn't work 4.5.5.
If OS 4.5.5 also gets rejected, then there is something wrong...