all i'm looking for Is way to root without unlocking the bootloader? I just want root apps, no custom ROMs.
Simple answer, you need to unlock the bootloader to root.
Long answer, some folks have rooted with an app called kingroot. But results are very inconsistent. I've seen a good number of folks who ended up with kingroot unsuccessful, having no root, and also no way to unlock the bootloader! So not a good place to be.
And in any case, in my opinion, any root attempt should be preceded by backing up your data anyway, in case anything goes wrong. So if your intent (in not unlocking the bootloader) is to bypass the data wipe (and skip backing up your data), then we are basically defeating the purpose.
Moral of the story, I would strongly recommend to just bite the bullet, and stick with the "standard" process to unlock the bootloader in order to root.
I need to take backup for HTC one M8 before proceed in unlock boot loader , to describe the problem more
the problem is that to take a backup for the whole device , as far as i know i should install custom recovery APP "CWM Recovery , TWRP Recovery ,.........."
which need unlock bootloader in which all data on mobile will be formatted due to unlock bootloader You are correct, in that you have a "chicken and egg" problem. You can't install custom recovery (TWRP) until you unlock the bootloader. And you can't make a TWRP backup, until you install TWRP.
Side note, CMW never officially supported the M8. There are some unofficial CMW ports for the M8, all very old. Which will almost certainly cause problems. I strongly recommend sticking with latest TWRP for the M8.
so is there a solution to backup the current device status to restore them back after unlock the bootloader .
"Current device status" is a little vague. It depends on what you want to backup:
- For things like contacts, I would suggest just backing up to Google (may already be the case)
- Things like photos, music: use a cloud solution, or simply backup (copy and paste) to your computer
- Stock ROM: You can back this up once you have TWRP installed. There are also stock backup collections, as well as official HTC RUUs for some M8 versions.
- App data: This one is a little tougher. One option is the app "Helium" from the Google Play Store. This is supposed to be able to backup app data, settings, etc. without root. I personally haven't used it (one of the first things I do with a new phone is root, lol). But other folks on XDA seem to have some success with Helium. It is developed by the CWM team.
