[Tuto] [EN/FR] Install nLoader / TI-Nspire CX

→ **MyCalcs** profile · by **tiagouwu** » 21 Sep 2023, 04:49

i did all but after the steep F9, my calculator do not turn on again help, a think i saw on the step F6 nLdr was first and boot 1.5.4.40.8 second.

→ **MyCalcs** profile · by **TBUC** » 21 Oct 2023, 06:40

I am stuck on the part where I flash diag/boot2. When click 2 to flash and enter to reflash I get the following message: "Source image exceeds area and has been rejected. Choose higher dest location."

→ **MyCalcs** profile · by **critor** » 21 Oct 2023, 09:06

Hello.

Is it possible to have a picture of the BtMg home screen ?
You can host it on https://imgur.com/ for example, and then post the address here.

→ **MyCalcs** profile · by **TBUC** » 21 Oct 2023, 21:15

I apologize for the long wait.

I have now since then changed my os to 4.4.0 thanks to your help from before. But I now face a similar issue. When I attempt to flash (with boot2) I get an error message as shown in the image. Tell me if I am missing any screenshots that would assist you in solving this issue.

I used this video as a reference of what I was trying to do. I am at about 13:40 or something like that in the video:
https://www.youtube.com/watch?v=fny7pg1OdcM

I thank you for helping me.

→ **MyCalcs** profile · by **foxium** » 08 Jun 2024, 13:25

I tried downgrading a NON-CAS CX hw rev AE from OS 4.5.5 by building nLoader from source, as per its README. The build script produced a couple integer conversion/casting errors, which could be suppressed using CFLAGS:

Code: Select all: ================================= Making nMaker image for NONCAS_OS ================================= rm -f *.o *.elf rm -f ../ndless_loader.bin arm-none-eabi-gcc -O3 -Wall -Werror -Wextra -Wconversion -marm -mcpu=arm926ej-s -nodefaultlibs -nostartfiles -s -ffreestanding -std=gnu11 -fomit-frame-pointer -Wno-implicit-fallthrough -o ndless_loader.o -c ndless_loader.c arm-none-eabi-ld -e ndlessLoader -T ldscript -flto ndless_loader.o -o ndless_loader.elf arm-none-eabi-objcopy -O binary ndless_loader.elf ../ndless_loader.bin rm -f *.o *.elf rm -f loader.bin loader.elf imageloader.o inject_ndless_loader.o main.o patchboot2.o screen.o utils.o memcpy.o arm-none-eabi-gcc -c imageloader.c -o imageloader.o -DNONCAS_OS -Wall -Werror -Wextra -Wconversion -O3 -marm -mcpu=arm926ej-s -nolibc -nostartfiles -fno-exceptions -lgcc -s -ffreestanding -std=gnu11 -fomit-frame-pointer imageloader.c: In function 'gethalfword': imageloader.c:35:17: error: conversion from 'int' to 'uint16_t' {aka 'short unsigned int'} may change value [-Werror=conversion] 35 | return hi << 8 | getbyte(p); | ~~~~~~~~^~~~~~~~~~~~ imageloader.c: In function 'getword': imageloader.c:40:18: error: conversion to 'uint32_t' {aka 'long unsigned int'} from 'int' may change the sign of the result [-Werror=sign-conversion] 40 | return hi << 16 | gethalfword(p); | ~~~~~~~~~^~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make: *** [_Makefile:14: imageloader.o] Error 1

However, the resulting nLoader boot image (flashed using TTL) freezes on the loading screen at 2%. The boot screen shows up but the progress bar does not proceed even after waiting for 10 minutes.

Code: Select all: Boot Loader Stage 1 (4.0.1.43) Build: 2015/7/20, 14:47:25 Copyright (c) 2006-2015 Texas Instruments Incorporated Using production keys Last boot progress: 1535 Available system memory: 28072 Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) SDRAM size: 64 MB SDRAM memory test: Pass Clearing SDRAM...Done. Clocks: CPU = 156MHz AHB = 78MHz APB = 39MHz Clearing SDRAM...Done. Boot option: Normal Loading from BOOT2 partition... 100% BOOT1: loading complete (120 ticks), launching <BOOT1.5> image. Boot Loader Stage 1.5 (4.4.0.8) Build: 2016/8/10, 16:15:40 Copyright (c) 2006-2016 Texas Instruments Incorporated Using production keys Clocks: CPU = 156MHz AHB = 78MHz APB = 39MHz Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) Initializing graphics subsystem. Loading from Boot 2 partition... 2%

Any ideas why this is happening?

→ **MyCalcs** profile · by **JustDaveSL** » 19 Jun 2024, 15:49

I have successfully downgraded my OS. Whenever I reset I have to press esc+Menu+minus or else it wont boot and shows a red X on the boot screen. How do I make that go away?

→ **MyCalcs** profile · by **foxium** » 22 Sep 2024, 10:09

foxium wrote:
Code: Select all
Loading from Boot 2 partition... 2%

Any ideas why this is happening?

I was able to eliminate the compiler errors by using specifically the "arm-gnu-toolchain-12.2.rel1" to build nLoader. However the resulting bootloader image (after installing via serial) still gets stuck at 2% (NON-CAS) or 3% (CAS):

Code: Select all: Loading from BOOT2 partition... 100% BOOT1: loading complete (121 ticks), launching <BOOT1.5> image. Boot Loader Stage 1.5 (4.4.0.8) Build: 2016/8/10, 16:15:40 Copyright (c) 2006-2016 Texas Instruments Incorporated Using production keys Clocks: CPU = 156MHz AHB = 78MHz APB = 39MHz Checking for NAND: NAND Flash ID: Generic 1 GBit (0xA1) Initializing graphics subsystem. Loading from Boot 2 partition... 3%0x02AFD250 calculated 0x0018F09