Installing Magento SUPEE-8167 : The Complete Guide A new upgrade Magento SUPEE8167 was released very recently. SUPEE8167 is a tiny patch with the latest PayPal IPN server location. This patch is required to keep the PayPal processing transactions after June 30, 2017. Thus in order to avoid disruptions in PayPal, and for its normal functioning, all users are required to install this patch.
In order to install this patch which is apparently very essential, you can use SSH. If you have access to SSH, the process becomes extremely simple for you. You simply have to apply the patch via SSH. However, if you do not have SSH access, you can follow the below steps: You can easily upgrade your installation to Magento version 1.9.3.3, that includes all the security patches which came later. This version contains all the latest patches. If you cannot process the Magento upgrade due to any reason, you need not worry. You can still apply this latest patch using FTP/sFTP upload and continue your magento development. For this, you first need to disable the Magento Compiler and clear the Compiler cache.
• Apply the Magento patch via FTP/sFTp of the File Upload: You can apply this latest patch in a simple way like we replace changed files.