mirror of
https://github.com/raspberrypi/rpi-update.git
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76 lines
2.3 KiB
Markdown
76 lines
2.3 KiB
Markdown
# rpi-update
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An easier way to update the firmware of your Raspberry Pi
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## Status
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This tool is experimental, and may screw up your install. If you have problems
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with it, post an issue to this GitHub repo and I'll see if I can help you.
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## Preparations
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To prevent errors relating certificates, one can fix two possible problems.
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- Either the time is set incorrectly on your Raspberry Pi, which you can fix
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by simply setting the time using NTP.
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sudo ntpdate -u ntp.ubuntu.com
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- The other possible issue is that you might not have the ca-certificates
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package installed, and so GitHub's SSL certificate isn't trusted. If you are
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on Debian, you can resolve this by typing:
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sudo apt-get install ca-certificates
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## Installing
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To install the tool, run the following command:
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sudo wget http://goo.gl/1BOfJ -O /usr/bin/rpi-update && chmod +x /usr/bin/rpi-update
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## Updating
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To then update your firmware, simply run the following command:
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sudo rpi-update
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### Options
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By default, rpi-update will attempt to determine the split you're currently
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using, and then use that split. If it cannot determine what split you are using,
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it will default to 224MB. If you'd like to explicitly select a split, simply
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provide the RAM split value after the command as follows:
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sudo rpi-update 192
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If you'd like to use the 128MB memory split, then the command is the same as the
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above, except with 128 instead of 192:
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sudo rpi-update 128
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### Environment Variables
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There are a number of options for experts you might like to use, these are all
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environment variables you must set if you wish to use them.
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#### SKIP_KERNEL
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sudo SKIP_KERNEL=1 rpi-update
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Will update everything **except** the kernel.img files and the kernel modules.
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Use with caution, some firmware updates might depend a kernel update.
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#### ROOT_PATH/BOOT_PATH
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sudo ROOT_PATH=/media/root BOOT_PATH=/media/boot rpi-update
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Allows you to perform an "offline" update, ie update firmware on an SD card you
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are not currently booted from. Useful for installing firmware/kernel to a
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non-RPI customised image. Be careful, you must specify both options or neither.
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Specifying only one will not work.
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## Activating
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After the firmware has been sucessfully updated, you'll need to reboot to load
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the new firmware.
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