Hi Nicolas, > I did the increase of /boot too. Do you have the 4.4.12 kernel too? > It was installed as a dependancy for 4.4.26. no, actually I went straight from 4.2.3-200 to 4.4.26-201. I double checked yum.log, but there is no intermediate step. >>less yum.log-20170101 | grep kernel >>Dec 03 09:35:47 Installed: kernel-tools-libs-4.2.3-200.el7.armv7hl >>Dec 03 09:36:52 Installed: kernel-tools-4.2.3-200.el7.armv7hl >>Dec 03 09:38:11 Installed: kernel-core-4.2.3-200.el7.armv7hl >>Dec 03 09:38:26 Installed: kernel-modules-4.2.3-200.el7.armv7hl >>Dec 03 09:38:26 Installed: kernel-4.2.3-200.el7.armv7hl >>Nov 17 17:51:03 Installed: kernel-headers-4.4.26-201.el7.armv7hl >>Nov 17 19:05:19 Updated: kernel-tools-libs-4.4.26-201.el7.armv7hl >>Nov 17 19:06:03 Installed: kernel-core-4.4.26-201.el7.armv7hl >>Nov 17 19:06:26 Installed: kernel-modules-4.4.26-201.el7.armv7hl >>Nov 17 19:06:27 Installed: kernel-4.4.26-201.el7.armv7hl >>Nov 17 19:06:27 Updated: kernel-tools-4.4.26-201.el7.armv7hl btw. This is Dec 03 2015 and Nov 17 2016 :-) > Can you share your /boot/extlinux/extlinux.conf file? sure! Here it is.. ---8<--- #Created by RootFS Build Factory ui menu.c32 menu autoboot centos menu title centos Options #menu hidden timeout 60 totaltimeout 600 label centos kernel /vmlinuz-4.4.26-201.el7.armv7hl append enforcing=0 root=UUID=9359b607-7331-40ef-98d7-556faebff04d fdtdir /dtb-4.4.26-201.el7.armv7hl initrd /initramfs-4.4.26-201.el7.armv7hl.img ---8<--- See the content of my /boot directory. Both kernels are still there... ---8<--- ls -l --block-size=k total 206192K drwxr-xr-x. 5 root root 1K Nov 17 20:15 38f5ec9e217b471e8adee477d933f640 -rw-------. 1 root root 2812K Nov 26 2015 System.map-4.2.3-200.el7.armv7hl -rw-------. 1 root root 2879K Oct 23 02:06 System.map-4.4.26-201.el7.armv7hl -rw-r--r--. 1 root root 1K Jun 4 2016 boot.scr -rw-r--r--. 1 root root 168K Nov 26 2015 config-4.2.3-200.el7.armv7hl -rw-r--r--. 1 root root 173K Oct 23 02:06 config-4.4.26-201.el7.armv7hl drwxr-xr-x. 2 root root 15K Dec 3 2015 dtb-4.2.3-200.el7.armv7hl drwxr-xr-x. 2 root root 17K Nov 17 20:05 dtb-4.4.26-201.el7.armv7hl drwxr-xr-x. 2 root root 1K Nov 17 20:26 extlinux drwxr-xr-x. 2 root root 1K Jan 1 1970 grub -rw-r--r--. 1 root root 34167K Nov 17 20:14 initramfs-0-rescue-38f5ec9e217b471e8adee477d933f640.img -rw-r--r--. 1 root root 34105K Dec 3 2015 initramfs-4.2.3-200.el7.armv7hl.img -rw-r--r--. 1 root root 33681K Nov 17 20:10 initramfs-4.4.26-201.el7.armv7hl.img -rw-r--r--. 1 root root 593K Dec 18 18:09 initrd-plymouth.img -rw-r--r--. 1 root root 1K Nov 17 20:11 klist.txt drwxr-xr-x. 3 root root 1K Dec 3 2015 loader drwx------. 2 root root 12K Dec 3 2015 lost+found -rw-r--r--. 1 root root 5906K Nov 17 20:11 uImage -rw-r--r--. 1 root root 5906K Nov 17 20:11 uImage-4.4.26-201.el7.armv7hl -rw-r--r--. 1 root root 33681K Nov 17 20:11 uInitrd -rw-r--r--. 1 root root 33681K Nov 17 20:11 uInitrd-4.4.26-201.el7.armv7hl -rwxr-xr-x. 1 root root 5906K Nov 17 20:15 vmlinuz-0-rescue-38f5ec9e217b471e8adee477d933f640 -rwxr-xr-x. 1 root root 5729K Nov 26 2015 vmlinuz-4.2.3-200.el7.armv7hl -rwxr-xr-x. 1 root root 5906K Oct 23 02:06 vmlinuz-4.4.26-201.el7.armv7hl ---8<--- One thing I like with these tiny machines is that you can easily make a snapshot by simply copying the content of the SD-card to a second machine. Pretty simple and foolproof if something goes wrong :-) > It seems it's not all correctly updated on my side :s Are you using the same repos? See below: ---8<--- grep enabled /etc/yum.repos.d/* /etc/yum.repos.d/CentOS-Base.repo:enabled=1 /etc/yum.repos.d/CentOS-Base.repo:enabled=1 /etc/yum.repos.d/CentOS-Base.repo:enabled=1 /etc/yum.repos.d/CentOS-Base.repo:enabled=0 /etc/yum.repos.d/CentOS-CR.repo:enabled=0 /etc/yum.repos.d/CentOS-Debuginfo.repo:enabled=0 /etc/yum.repos.d/CentOS-Sources.repo:enabled=0 /etc/yum.repos.d/CentOS-Sources.repo:enabled=0 /etc/yum.repos.d/CentOS-Sources.repo:enabled=0 /etc/yum.repos.d/CentOS-Sources.repo:enabled=0 /etc/yum.repos.d/CentOS-Testing.repo:enabled=0 /etc/yum.repos.d/CentOS-Testing.repo:enabled=0 /etc/yum.repos.d/CentOS-Vault.repo:enabled=0 /etc/yum.repos.d/CentOS-Vault.repo:enabled=0 /etc/yum.repos.d/CentOS-Vault.repo:enabled=0 /etc/yum.repos.d/CentOS-Vault.repo:enabled=0 /etc/yum.repos.d/CentOS-Vault.repo:enabled=0 /etc/yum.repos.d/CentOS-armhfp-kernel.repo:enabled=1 /etc/yum.repos.d/CentOS-fasttrack.repo:enabled=0 ---8<--- best regards, Michael