rpi-update

*** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom
*** Performing self-update
*** 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)
*** Remove old firmware backup
*** Backing up firmware
*** Remove old modules backup
*** Backing up modules 4.9.80+
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WARNING: This update bumps to rpi-4.14.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=197689
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Would you like to proceed? (y/N)
*** 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 0 155 0 –:–:– 0:00:01 –:–:– 155
100 55.3M 100 55.3M 0 0 471k 0 0:02:00 0:02:00 –:–:– 1008k
*** Updating firmware
*** Updating kernel modules
*** depmod 4.14.27+
*** depmod 4.14.27-v7+
*** 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 c841df752a7f9c2638678bb9f87b09f7459b41bc
*** A reboot is needed to activate the new firmware