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[Q] Going to upgrade from an S4 to the M8, and I'd like to know

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some_douchebag
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Default [Q] Going to upgrade from an S4 to the M8, and I'd like to know

if HTC allows downgrading the bootloader so I can install a custom rom after I make the mistake of taking an OTA update from ATT. With the S4 this wasn't possible. but since this is my first android phone, I was wondering if it was Samsung trying to keep the device "secure" or ATT forcing these companies to keep their bootloaders locked.
 
an0ther
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Quote:
Originally Posted by some_douchebag View Post
if HTC allows downgrading the bootloader so I can install a custom rom after I make the mistake of taking an OTA update from ATT. With the S4 this wasn't possible. but since this is my first android phone, I was wondering if it was Samsung trying to keep the device "secure" or ATT forcing these companies to keep their bootloaders locked.
Once you unlock the boot loader no update can relock it. HTC offers a lot more freedom than samsung, but at the price of no warranty. So if you unlock it and shatter your screen, don't be upset like other people when htc will not warranty it. As long as you have a custom recovery, your phone cannot even physically take an ota update so nothing to worry about either way.
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Tower1972
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The Magnuson–Moss Warranty Act is in place for us consumers for this reason. The company has to prove that any modification you did, is the cause of the trouble. So if you unlock your bootloader, root, etc, then crack your screen, as the poster above mentioned, the company can not void your warranty since what you did has nothing to do with cracking your screen.

This was huge for me when I modified my car and I found this here on XDA after doing more searching

http://www.xda-developers.com/xda-tv...t-void-xda-tv/

Oh and yeah,,if you are outside the US, it wont work lol
AT&T HTC One M8 ex-Harmon Kardon edition!
ARHD 10.2 Android 4.4.3!
Rooted, bootloader unlocked, SuperCID
TWRP 2.7.1.0

If you like scary video games..Give Five Nights at Freddies a shot...I havent jumped that much in a long time!!
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redpoint73
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Quote:
Originally Posted by some_douchebag View Post
if HTC allows downgrading the bootloader
That depends on what you mean by "allow". You cannot downgrade the bootloader by any "official" means. You will fail version check when you try to install, as you can "normally" only flash a equal or great version number hboot.

But if you are s-off, version check is bypassed, and any hboot version can be flashed.

Similar to a previous response, my advice would be to unlock the bootloader (required if you want to flash custom ROMs anyway) and S-off the phone soon after you get it. Neither of those can be changed by any OTA.

Also, accepting OTA is not recommended on a modded phone, anyway. Whatever came in the update will usually get posted in a stock rooted form in the Development forum, and/or incorporated into custom ROMs, often within days of the OTA rolling out. And OTA will not install on a modded phone (stock recovery needs to be present). OTAs also may plug existing s-off or other exploit; preventing you from doing them if you haven't already (but as mentioned, can't make the phone s-on again). Moral of the story, I strongly recommend against OTA on any modded phone.

Some of these terms/concepts are HTC specific, so may be a bit confusing for you. I would suggest reading up on these forums, if you aren't familiar with s-off, HTC's bootloader unlock process, etc.
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