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Rom for battery saving

Discussion in 'Android Devices' started by JustByZero, May 21, 2011.

  1. JustByZero

    JustByZero Newbie
    Thread Starter

    Hi there is there a rom out that is designed to save battery power?

    Also is there a way of downgrading from 2.3.3, the only reason I left my phone unrooted so long was to see the update, which i was greatly disapointed to find that HTC didnt include the GB keyboard (was looking forward to using that!)

    I know the process in rooting etc, as I have done it before, plus there are stickies ect.

    Thanks
     



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  2. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    Is the keyboard the main reason you want to switch? Somebody made it available in the android market here if that helps.

    I've heard you can root 2.3 with gingerbreak, but I don't know much about that yet. I'm not sure if 2.3 can be S-offed or not.

    Downgrading can be done using a goldcard.
     
  3. JustByZero

    JustByZero Newbie
    Thread Starter

    Ahh thanks for the reply, I'll admit one of the reasons was because of the keyboard, but I am bored of the whole HTC Sence thing. I want something different to look at if you can see where I am coming from.

    I think I shall wait for a while and see how people get on downgrading and things, I really dont want to brick my phone just yet lol.

    Thanks again :)
     
  4. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    Hmm, I took a look at the link I gave you and it seems that gingerbreak can be used to get S-Off, in the sense that you use gingerbreak to downgrade to s-offable firmware.
     
  5. JustByZero

    JustByZero Newbie
    Thread Starter

    I have been looking at CM7, would I be able to downgrade with gingerbreak and then install cm7 rom on my phone? All these terms get so bloody confusing!
     
  6. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    Yeah, the instructions I linked to previously (here) will talk you through the downgrade process. Looks like the procedure is almost identical to how it was for people downgrading from 2.2.1, except you're using a different app to gain temp-root.

    Once you've done that, it will leave you on the stock 2.2 ROM, from which you can then go to CM7. You say you're familiar with rooting so I'm assuming you know the process from there, but don't hesitate to ask if you have any questions :)
     
  7. JustByZero

    JustByZero Newbie
    Thread Starter


    Yeah was just a bit unsure about the whole downgrading thing, looks just as simple as before, i see people talking about goldcards now, that wasn't something i had heard or used before, would you mind explaining some more? Also I'm 90% sure my phone is completely unlocked, would that mean I could just use a RUU to downgrade? or would it still be going down the gingerbreak route..

    Many thanks :)
     
  8. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    When you install official firmware it checks to make sure you're installing firmware of the same branding as you're currently running. So for instance, if you're running Orange branded firmware, you can only install Orange RUUs. Goldcards, which are just normal sdcards with a few lines of code temporarily changed, trick any RUU into installing on any phone.

    What do you mean by it being unlocked? In this case unlocked refers only to whether the phone will accept SIM cards from other networks - it doesn't affect what you're trying to do. Now if you mean the phone has unbranded firmware (you can tell by finding your build number from Settings >> About Phone >> Software information), then you won't need a goldcard no.

    Now this point I'm not so sure of. Long story short, most of my knowledge on this comes from a previous HTC phone and there are one or two points where the process differs for the Desire HD. So I would expect the RUU to reject your phone since you're trying to install older firmware than you are running, but I would be interested to hear if that is the case.

    If the RUU won't work, you'll need to follow the downgrade instructions as I posted.
     
  9. JustByZero

    JustByZero Newbie
    Thread Starter

    Okay so Looking at my phone the build number it shows is the following: 2.36.405.8 CL47853 rekease-keys

    Does that aid you at all? And I might see if I can do it, but like you say, its more than likely to throw it back and say its an older version.
     
  10. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    You were right then, that's unbranded firmware :)
     
  11. JustByZero

    JustByZero Newbie
    Thread Starter

    Which would mean I don't need a goldcard?

    I think I shall use the older method, downgrading and so on.

    Thank you for your help! :)

    Edit: Is there a way of backing up my current firmware? I want to keep it just incase I want to put it back on for whatever reason.
     
  12. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    It's not that the goldcard is a separate technique, it's just something people with branded firmware need in order for the downgrade technique to work.

    You can't backup your firmware without root, but you can backup the 2.2 you're downgrading to (and if you ever had to restore to 2.2, you can do the OTA update again). Once you've rooted and installed ROM Manager, it'll give you the option to backup 2.2. However, the best way would be to keep the 2.2 RUU file handy - that way you can install it over CM7/whichever custom rom you're on and return to stock that way.

    Also bear in mind that downgrading will wipe all of your data from the phone. Make sure you've backed everything up first.
     
  13. JustByZero

    JustByZero Newbie
    Thread Starter

    If i have a rooted phone, and I got the RUU for the 2.36 build, is there anyway that I can stay rooted and have the latest build? it's just that link for gingerbreak says "AGAIN, THIS DOES NOT WORK ON S-ON DEVICES !" or is it as soon as you select s-off it stays off?

    Sorry for all the questions :)
     
  14. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    I'm not sure where you're reading that - could you link me to it specifically?

    If I recall correctly, I don't think gingerbreak can give you permanent root access unless you already got S-Off whilst running Froyo. That's probably what it's referring to.

    But if you were to downgrade, gingerbreak is used to gain temp-root (which works on S-On devices) to allow the downgrading process to work.
     
  15. JustByZero

    JustByZero Newbie
    Thread Starter

    Gingerbreak link. Completely forgot to actually write anything, Okay, so basically I've changed my mind, I just want root access on gingerbread if I can, by that I mean permanent root access. So if I have s-off while in froyo and then upgrade to gingerbread again, I can gain full access?
     
  16. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    That's correct. You'll need to downgrade, perma-root with visionary, get S-Off and then update back to gingerbread. Then gingerbreak will let you get perma-root.

    I'm not sure which type of S-Off you'll need for gingerbreak to use once you update back to gingerbread though. There are two, Radio S-Off and ENG S-Off.
     
  17. JustByZero

    JustByZero Newbie
    Thread Starter

    Just to let you know, I have done it, I downgraded and installed visionary and then did radio s-off and then installed the lastest RUU, installed the APK for gingerbreak, and it rooted it right away, I now have it on gingerbread and rooted :)
     
  18. Xyro

    Xyro 4 8 15 16 23 42
    Moderator

    Awesome :)
     
  19. JustByZero

    JustByZero Newbie
    Thread Starter

    Thank you very much for all your help, I have a much better idea of the whole thing now :)
     

HTC Desire HD Forum

The HTC Desire HD release date was October 2010. Features and Specs include a 4.3" inch screen, 8MP camera, 768GB RAM, Snapdragon S2 processor, and 1230mAh battery.

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