After you will use pack from post #89 you will see in what directory you will have last_id.bin
If you have it in 0660 then you have this hwid if you find it in 0835 than this is your hwid

p.s.
this Flash1 575-A0078-00 is not hwid if you like to see it in hidden menu over battery icone then you must se on second page if i remember correct and hit start test and then button More and there you will see boot blk and this is your hwid.