In need with dump check fail

Hi y'all,

I'm trying to install CFW but I keep running into the same error, my dump.hex check fails.

I'm currently on OFW 4.82 on a NAND ps3

I did following:

1. installed OFW twice
2. went to http://www.ps3xploit.com/writer/index_nand_hdd.html and initialized exploid (succesful) and patched (succesful)
3. set my homepage to http://www.ps3xploit.com/dumper/index_nand_hdd.html, cleared cookies and cache and closed the browser
4. opened the browser again,...

In need with dump check fail