[GH-ISSUE #393] modifying the bootloader #181

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opened 2026-05-06 13:16:03 +02:00 by BreizhHardware · 4 comments

BreizhHardware commented

2026-05-06 13:16:03 +02:00

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Originally created by @romain1235 on GitHub (Mar 18, 2026).
Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/393

I tried modifying the bootloader code and managed to flash it, but afterwards, it wouldn't boot. I modified:
-the colors
-the text
-the image (to keep the default computer.png)

Originally created by @romain1235 on GitHub (Mar 18, 2026). Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/393 I tried modifying the bootloader code and managed to flash it, but afterwards, it wouldn't boot. I modified: -the colors -the text -the image (to keep the default computer.png)

BreizhHardware closed this issue

2026-05-06 13:16:03 +02:00

BreizhHardware commented

2026-05-06 13:16:03 +02:00

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@Yaya-Cout commented on GitHub (Mar 23, 2026):

Hi
Sorry for the late reply. How are you building the bootloader? A common issue is that make bootloader.bin doesn't work, you should use make bootloader instead. A make cleanall may be required

For example, when debugging the bootloader, I use the following command: make bootloader MODEL=n0110 -j8 && dfu-util -i 0 -a 0 -s 0x08000000:leave -D output/release/device/n0110/bootloader.bin

@Yaya-Cout commented on GitHub (Mar 23, 2026): Hi Sorry for the late reply. How are you building the bootloader? A common issue is that `make bootloader.bin` doesn't work, you should use `make bootloader` instead. A `make cleanall` may be required For example, when debugging the bootloader, I use the following command: `make bootloader MODEL=n0110 -j8 && dfu-util -i 0 -a 0 -s 0x08000000:leave -D output/release/device/n0110/bootloader.bin`

BreizhHardware commented

2026-05-06 13:16:04 +02:00

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@romain1235 commented on GitHub (Mar 23, 2026):

I've used make MODEL=n0110 bootloader_flash

@romain1235 commented on GitHub (Mar 23, 2026): I've used make MODEL=n0110 bootloader_flash

BreizhHardware commented

2026-05-06 13:16:04 +02:00

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@Yaya-Cout commented on GitHub (Mar 31, 2026):

Does it work with the following commands?

make cleanall
make bootloader MODEL=n0110 -j8 && dfu-util -i 0 -a 0 -s 0x08000000:leave -D output/release/device/n0110/bootloader.bin

@Yaya-Cout commented on GitHub (Mar 31, 2026): Does it work with the following commands? ```bash make cleanall make bootloader MODEL=n0110 -j8 && dfu-util -i 0 -a 0 -s 0x08000000:leave -D output/release/device/n0110/bootloader.bin ```

BreizhHardware commented

2026-05-06 13:16:04 +02:00

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@romain1235 commented on GitHub (Apr 10, 2026):

it works!!

@romain1235 commented on GitHub (Apr 10, 2026): it works!!