[Q] RUU Installation

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Ok, so I can't find a compatible boot.img to flash via cmd in bootloader to restore my 2.3.5 original nandroid backup.

All I want to do is return to stock rom after which I will attempt downgrade and s-off because I'm tired of the restrictions and I couldn't care a less about my warranty etc.. I'll use either zerg rush or taco root depending on my software version which atm I have no idea of obviously..so I know to downgrade it's a different story..


Currently S-ON, HBOOT 2.00.0002 HTC UNLOCKED, REAPER 3.0(CM7) ROM Installed. 4EXT Recovery.

I have downloaded a compatible RUU which in my case is
RUU_Saga_S_HTC_Thailand_2.15.1113.2_Radio_20.4801. 30.0822U_3822.10.08.04_M_release_226808_signed.exe

Checked by running fastboot getvar main-version: C:\WINDOWS\system32>fastboot getvar version-main
version-main: 2.15.1113.2 (and) CID HTC__058

So that is equal to what I have now on the phone (I also have another older RUU with hboot 98.00.000 for use with S-OFF'ing later...)

So becaue the RUU version is the same as my original can I just run the INSTALLER and let it do it's thing? And do I need to relock my bootloader first?


I have been reading and searching guides for hours, but nothing is clear to me, my wife is at my throat as well saying I've married my PC *you've probably heard it*

Has anyone done this before?

To save you some unnecessary steps:
1) Change the misc_version (look it up, it's a step in downgrading guide) under your current ROM (I assume you're rooted).
2) Lock the bootloader.
3) Flash the older (0.98 bootloader) RUU.

The correct answer　for Jack_R1.

[GUIDE] Official HBOOT 2.00.0002 Downgrade to OLD HBOOT thanks Skanob

Some extra optimizations on the guide that bring it to my short version:

1. If you're using the correct RUU for your region - you can skip GoldCard step.

3,4. You don't have to flash stock rooted ROM if you know that you can reboot to bootloader and run the RUU while in fastboot mode. Your phone might not load the OS after locking the bootloader on non-stock firmware, but it won't matter, since all you need is fastboot.


If you're not familiar enough with what things do - follow the guide exactly, don't take shortcuts.

Now I have:

-Revolutionary-
SAGA PVT SHIP S-OFF RL
HBOOT-6.98.1002
RADIO-3805.04.02.01_M
eMMC-boot
Mar 10 2011, 14:58:38

I still didn't understand how things worked and was up another 4 hours mucking around, in the end after succeeding, I can't believe how easy it was.

I never even knew what zergrush and tacoroot were for exactly or which misc version number i should use.

In the end I went back to stock rom, unlocked again using my original token, flashed recovery and then Superuser. After that I didn't need zergrush etc to gain temp root(obviously), just changed misc version, rebooted, revolutionary to s-off and 'Bob's your Uncle'. Now I guess I should learn about the things I can do with s-off...(apart from not needing to fastboot flash boot.img every rom change)

I will elaborate on the things that confused me for others later, but right now, I'm off to work.

Thanks again Jack,

Now you might discover that unless you made some steps you didn't list, S-OFF won't work for you, and you'll still have to flash boot.img manually. If you didn't relock the bootloader and flash the RUU, that is. But I assume you did, and just skipped it on the list of things.

Zergrush or tacoroot are means to get temporary root - which is no good, since it doesn't stick after reboot, but it allows you this one time to change misc_version to allow downgrade. And any misc_version would do, as long as it's below the one you're flashing for downgrade. On MT4G, we usually set it for 1.00.000, that way you can't go wrong.

Glad you made it.

Embarrassingly, I do have problems still. After relocking and flashing the older RUU(HBOOT 0.98.000) successfully, I used Revolutionary to S-OFF. During the process the software asked me if i wanted to install clockwork Recovery, to which I answered 'no'. After that I tried to manually flash 'ext recovery' which I had before, so then I can flash 'Superuser.zip', but get an error message, I'm not sure why?
So I don't have root.
I'm at work now, when I get home all I can try is flash clockwork and see if that works.

*EDIT* Successfully flashed recovery-clockwork-5.0.2.0-saga.img and then superuser, perhaps the version of 4EXT recovery wasn't compatible or something...!? I can't be sure.
Restored Nandroid of previous Reaper 3.0, all is well.

My device used to be S-OFF hboot 6.98.0002.
but now is S-OFF Hboot 7.00.1002.

look : [HBOOT] | 29-05-2012 | 7.00.1002 | Reengineered 2.00.002

Originally Posted by kyeeliu

My device used to be S-OFF hboot 6.98.0002.
but now is S-OFF Hboot 7.00.1002.

look : [HBOOT] | 29-05-2012 | 7.00.1002 | Reengineered 2.00.002

Thanks for the lead kyeeliu, but I have little idea what that can provide, I heard upgrading HBOOT can S-ON your phone again as well. Although I'll have a read and try to garner what I can...

My phone upgraded, but the S-OFF.

Because our mobile phone software unlock.If you use the official RUU upgrade will become S-ON.

We use modified HBOOT, there is no problem.

I currently use, and indeed as vampire36 said, the flash ROM no problem.