4.3.1 installation failed issues

Hello,

We are experiencing difficulties installing the 4.3.1 update.

Though we are used to using other FTP methods, and are the administrators and moderators of our WordPress sites, we are experiencing challenges related to this WordPress update. On occasion WP asked us for FTP login information to complete the updates, on other occasions the updates have worked and on others the updates are failing.

We believe we have enough space to accomodate the updates, we are clearing superflous files and restoring i-node availability – and have recently successfully installed and updated plugins.

Without using the FTP, and with as little coding as possible, preferably none, can you advise us, provide help or insight to enable us to install the update, preferably by our using the Update button like people would normally use?

I have included samples of the failed installations.

“Downloading update from https://downloads.wp.xz.cn/release/wordpress-4.3.1-no-content.zip…

Unpacking the update…

Could not copy file.: wordpress/wp-includes/js/zxcvbn.min.js

Installation Failed”

and

“Downloading update from https://downloads.wp.xz.cn/release/wordpress-4.3.1-no-content.zip…

Unpacking the update…

Could not copy file.: wordpress/wp-admin/options-permalink.php

Installation Failed”