pi@sirit:~ $ sudo 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 13545  100 13545    0     0  13853      0 --:--:-- --:--:-- --:--:-- 13849
 *** 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 4.14.79-v7+
#############################################################
WARNING: This update bumps to rpi-4.19.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=224931
##############################################################
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    193      0 --:--:-- --:--:-- --:--:--   193
100 58.2M  100 58.2M    0     0   890k      0  0:01:06  0:01:06 --:--:--  456k
 *** Updating firmware
 *** Updating kernel modules
 *** depmod 4.19.25+
 *** depmod 4.19.25-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 82f49d8dfd9c000a203fb1deae64a3eb87abf3c1
 *** A reboot is needed to activate the new firmware
pi@sirit:~ $