ex7000 update channels

[samlen27]

i recently bought a ex7000 hd box but previous to this i had a ex5000 and on that i could update my channels without deleting all the others and sorting all over again,but on this ex7000 i cant find how to update is there any way??
thanks in advance for your help

[chic.]

Hi m8 press menu user installation ok then press info to select all tp's then the blue btn scan