(sorry for my bad english)
i have buy a Galaxy S5 version SM-G900H ( not a new )
(i think that a original phone because i have the logo samsung on the phone, a label "samsung" with serial and only one sim card, original samsung battery.... )
i think that the the previous owner have change the rom and the kernel
when the phone start, i have "MEDIATEK" en little "green android" down
the phone is very slowly... my S3 is better....
when i try to enter the dowload mode with " vol- power on menu button ", i enter in a "Factory mode" in chinesse !!!!!
when i try to enter recovery, i have a message : select boot mode : Recovery mode, Fastboot mode, Normal.
How enter Download mode ? for rooting phone and change rom
Thank you !!!