Raspberry Pi - Jessie upgrade

Reference: here

Upgreate Wheezy to Jessie

Run the following:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list
sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list.d/*.list
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

Reboot

Edit /etc/ssh/sshd_config

/etc/ssh/sshd_config

Change:

PermitRootLogin without-password

to:

PermitRootLogin yes

Add the following lines

Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,blowfish-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc

KexAlgorithms=curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1

save and exit editor.

Restart ssh

/etc/init.d/ssh restart