You can easily downgrade the Kernel. You just have to: Boot into an older kernel. Remove the newer Linux kernel you don’t want.

Can I change kernel version?

Need to update the system. first check current version of kernel use uname -r command. … once system upgraded after that system need to reboot. some time after reboot system new kernel version not coming.

How do I change the default Linux kernel?

As mentioned in the comments, you can set the default kernel to boot into using the grub-set-default X command, where X is the number of the kernel you want to boot into. In some distributions you can also set this number by editing the /etc/default/grub file and setting GRUB_DEFAULT=X , and then running update-grub .