An easier way to update the firmware of your Raspberry Pi.
There are two possible problems related to SSL certificates that may prevent this tool from working.
-
The time may be set incorrectly on your Raspberry Pi, which you can fix by setting the time using NTP.
sudo ntpdate -u ntp.ubuntu.com -
The other possible issue is that you might not have the
ca-certificatespackage installed, and so GitHub's SSL certificate isn't trusted. If you are on Debian, you can resolve this by typing:sudo apt-get install ca-certificates
To install the tool, run the following command:
sudo wget http://goo.gl/1BOfJ -O /usr/bin/rpi-update && sudo chmod +x /usr/bin/rpi-update
Then, to update your firmware, just run the following command:
sudo rpi-update
After the firmware has been sucessfully updated, you'll need to reboot to load the new firmware.
If you'd like to set a different GPU/ARM memory split, then define gpu_mem in
/boot/config.txt.
To upgrade/downgrade to a specific firmware revision, specify its Git hash (from the https://github.com/Hexxeh/rpi-firmware repository) as follows:
sudo rpi-update fab7796df0cf29f9563b507a59ce5b17d93e0390
There are a number of options for experts you might like to use. These are all environment variables you must set if you wish to use them.
By default, rpi-update will attempt to update itself each time it is run.
You can disable this behavior by:
sudo UPDATE_SELF=0 rpi-update
sudo SKIP_KERNEL=1 rpi-update
Will update everything except the kernel.img files and the kernel modules.
Use with caution, some firmware updates might depend on a kernel update.
sudo ROOT_PATH=/media/root BOOT_PATH=/media/boot rpi-update
Allows you to perform an "offline" update, ie update firmware on an SD card you are not currently booted from. Useful for installing firmware/kernel to a non-RPI customised image. Be careful, you must specify both options or neither. Specifying only one will not work.