Searching for patched firmware is fundamentally different from downloading an official update. A "patched" version has been modified from its original state. The intentions behind these patches vary significantly:

The search for the HVJTMR1040R353 firmware download patched version usually stems from a need to bypass regional restrictions, unlock advanced administrative features, or resolve persistent software bugs that the manufacturer has failed to address. While patched firmware can breathe new life into your hardware, it requires a cautious approach to avoid permanent damage. Understanding HVJTMR1040R353 Firmware

Because these devices have direct access to your home network, "patched" firmware found on obscure forums often serves as a Trojan horse for botnets (like Mirai) or man-in-the-middle attacks.