This post is older than a year. Consider some information might not be accurate anymore.
If you want to update the firmware of your Raspberry Pi, these steps might interest you. This post uses Raspbian as OS. Have a look at Updating and Upgrading Raspbian first.
The program rpi-update is responsible for that. If it isn’t installed you can do it like that:
root@delta:/home/pi# apt-get install rpi-update
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
rpi-update
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 4408 B of archives.
After this operation, 45.1 kB of additional disk space will be used.
Get:1 http://archive.raspberrypi.org/debian/ jessie/main rpi-update all 20140705 [4408 B]
Fetched 4408 B in 0s (25.3 kB/s)
Selecting previously unselected package rpi-update.
(Reading database ... 32928 files and directories currently installed.)
Preparing to unpack .../rpi-update_20140705_all.deb ...
Unpacking rpi-update (20140705) ...
Setting up rpi-update (20140705) ...
Do the update
root@delta:/home/pi# rpi-update
*** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom
*** Performing self-update
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 12016 100 12016 0 0 58603 0 --:--:-- --:--:-- --:--:-- 58901
*** Relaunching after update
*** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom
*** We're running for the first time
*** Backing up files (this will take a few minutes)
*** Backing up firmware
*** Backing up modules 4.4.38-v7+
This update bumps to rpi-4.4.y linux tree
Be aware there could be compatibility issues with some drivers
Discussion here:
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=144087
##############################################################
*** Downloading specific firmware revision (this will take a few minutes)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 168 0 168 0 0 360 0 --:--:-- --:--:-- --:--:-- 361
100 51.9M 100 51.9M 0 0 886k 0 0:01:00 0:01:00 --:--:-- 827k
*** Updating firmware
*** Updating kernel modules
*** depmod 4.4.43-v7+
*** depmod 4.4.43+
*** Updating VideoCore libraries
*** Using HardFP libraries
*** Updating SDK
*** Running ldconfig
*** Storing current firmware revision
*** Deleting downloaded files
*** Syncing changes to disk
*** If no errors appeared, your firmware was successfully updated to a12b699d642096023a2b3009bb88ca82ad0baef4
*** A reboot is needed to activate the new firmware
Reboot
root@delta:/home/pi# reboot && exit
Broadcast message from pi@delta on pts/0 (Fri 2017-01-20 20:43:06 UTC):
The system is going down for reboot NOW!
exit
pi@delta:~ $ Connection to delta closed by remote host.
Connection to delta closed.
Check the versions of your Pi cluster with Ansible.
tan@omega:~$ ansible all -u root -m shell -a '/opt/vc/bin/vcgencmd version'
beta | SUCCESS | rc=0 >>
Jan 18 2017 20:50:30
Copyright (c) 2012 Broadcom
version c0cf7dabf4dfd8eb1110c18198bc2481fe419ad2 (clean) (release)
alpha | SUCCESS | rc=0 >>
Jan 18 2017 20:50:30
Copyright (c) 2012 Broadcom
version c0cf7dabf4dfd8eb1110c18198bc2481fe419ad2 (clean) (release)
gamma | SUCCESS | rc=0 >>
Jan 18 2017 20:50:30
Copyright (c) 2012 Broadcom
version c0cf7dabf4dfd8eb1110c18198bc2481fe419ad2 (clean) (release)
delta | SUCCESS | rc=0 >>
Jan 18 2017 20:50:30
Copyright (c) 2012 Broadcom
version c0cf7dabf4dfd8eb1110c18198bc2481fe419ad2 (clean) (release)
