If you have the specific brand or product category, I can find the exact download link for you.
If your device has 16MB flash, a 32MB “firmware” is fake. hvtjmr1040r353 firmware exclusive download
Wayback Machine may have saved old driver pages. Use the real model number. If you have the specific brand or product
: Firmware files can be used to deliver malware or permanently "brick" hardware if they are not from an official source. Verify the Source hvtjmr1040r353 firmware exclusive download
"Exclusive" downloads are typically hosted on the manufacturer’s official support portal rather than third-party sites to prevent malware risks.