Hi, where I can find firmware QTS 5.0.1.2425 build 20230609. I need a file as I have problem with certificate date (error 102) when trying to do an online update. I have QNAP TS-251 with 4.54.1892. Please help
Hi and welcome to the the forum. 
Here you go: https://download.qnap.com/Storage/TS-X51/TS-X51_20230609-5.0.1.2425.zip
Thank you