Joomla 5 Update Package 5.1.1

Category: Core

Version: 5.1.1

Date: 28 May 2024

Download type: Free

Compatibility: J5

Ivan Petrov

June 25, 2026

What I love about working with the guys at Joomla Center, besides their excellent knowledge of their craft, is their patience and politeness. No irritation at stupid questions, no arrogance, no eye-rolling, no heavy sighs. On the contrary, they explain things very politely and clearly, give recommendations, do things quickly and competently, and if something goes wrong, they'll fix it just as quickly. Five stars on all counts! As they say now, I'm hooked!

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kennel avanzar

June 15, 2026

I want to express my sincere gratitude to the Joomla Center team for their professional assistance! After my site was hacked, their specialists quickly identified and eliminated all the consequences of the attack, patched vulnerabilities, updated the software, and restored the site to its original state. I was especially pleased that the work was not only done efficiently but also with detailed explanations of all the steps taken.

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Solnyshko

June 05, 2026

You guys are the best. You're always there to help and solve any problem. Today, a cybersecurity information site was down. Anton solved the problem in a couple of hours. Great job. I highly recommend you!!!

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Help The Children SKD

December 5, 2025

We thank the Joomla Center team for their professionalism, the excellently crafted training course, and their ongoing support.
Special thanks to Anton for his responsiveness, kindness, and immediate assistance with our website.
We wish you success in your endeavors 🤗

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Nikolay Mosunov

June 17, 2025

Thanks to Anton and the Joomla Training Center for their excellent work. They upgraded my sites from the old Joomla to the new one. Everything works perfectly, even better than before. They professionally fixed numerous errors. I can only recommend them. They offer truly excellent quality and speed at relatively low prices.

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Fixed	Fixed comment syntax in the update SQL script that adds TUF support (#43306).
Fixed	Fixed the dark-mode selector in the administrator template (#43310).
Fixed	Fixed the light and dark mode switch in the administrator interface (#43454).
Fixed	Corrected the link to the official Joomla forum (#43414).
Fixed	Corrected the message type used for the Redirect plugin state (#43402).
Fixed	Fixed the TinyMCE media button when editing articles on the frontend (#43376).
Fixed	Fixed link insertion using the TinyMCE media button (#43374).
Fixed	Fixed documentation links in empty-state views (#43371).
Fixed	Fixed a PHP deprecation warning caused by passing null to PDO::quote() (#43288).
Fixed	Added backward compatibility for older Bootstrap modals used by plugins and modules (#43291).
Fixed	Fixed calendar field value handling (#43234).
Fixed	Restored compatibility with legacy editor-xtd plugins returning an array of buttons (#43129).
Fixed	Fixed JavaScript syntax highlighting in the CodeMirror 6 editor (#43114).
Fixed	Fixed an incorrect value for the new trailingslash parameter in the system SEF plugin (#43292).
Fixed	Added missing entries to the help index (#43251).
Fixed	Fixed the help index build tool helpTOC.php (#43250).
Fixed	Fixed switching between duplicate menus in the administrator menu (#43308).
Fixed	Updated deprecation information in the Joomla changelog (#43219).
Fixed	Fixed PHP warnings occurring when new custom fields were created (#42956).
Fixed	Fixed handling of the administrator template brand parameter (#41458).
Fixed	Updated the documentation link (#43370).
Fixed	Added proper support for AVIF and WebP images (#43295).
Fixed	Improved exception handling when generating thumbnails in the Media Manager (#43468).
Fixed	Fixed an issue that could cause the extension compatibility check before a Joomla update to run indefinitely (#43410).
Fixed	Changed the redirect URL from the Location header in CurlTransport to be correctly handled as a string instead of an array (#42769).
Fixed	Updated the documentation to include MariaDB and remove the obsolete Microsoft SQL Server reference (#43368).
Fixed	Added inline help for the Activate Advanced Mode button in the Redirect component (#43435).
Fixed	Fixed date and time conversion when no current user is available (#43521).

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