Update programming.md
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@ -36,9 +36,13 @@ So it's important to not mess this up or you may brick your device.
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You can use a firmware build from the [latest release](https://github.com/solokeys/solo/releases) or use
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You can use a firmware build from the [latest release](https://github.com/solokeys/solo/releases) or use
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a build that you made yourself.
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a build that you made yourself.
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You need to use a firmware file that has the combined bootloader and application (or at the very least just the bootloader).
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You need to use a firmware file that has the combined bootloader, application, and attestation key pair (bootloader + firmware + key).
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This means using the `bundle-*.hex` file or the `bundle.hex` from your build. If you overwrite the Solo flash with a missing bootloader,
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This means using the `bundle-*.hex` file or the `bundle.hex` from your build.
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it will be bricked.
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#### *Warning*
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* **If you overwrite the Solo flash with a missing bootloader, it will be bricked**.
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* **If you program bootloader and firmware with no attestation, you will run into FIDO registration issues**
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We provide two types of bundled builds. The `bundle-hacker-*.hex` build is the hacker build. If you update with this,
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We provide two types of bundled builds. The `bundle-hacker-*.hex` build is the hacker build. If you update with this,
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you will update the bootloader and application, but nothing will be secured. The `bundle-secure-non-solokeys.hex`
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you will update the bootloader and application, but nothing will be secured. The `bundle-secure-non-solokeys.hex`
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