yashsingh1/xdaforums huggingface dataset:
[G2 and Desire Z Android Development] GenghisZ:
Had the same issue a week ago.

When you see the red exclamation mark, take out your battery, put it back in, let your phone boot in normal mode. Once booted, open the program 'Rom Manager' and there choose: 'Flash ClockworkMod Recovery'.

I know you already did it once, just do it a second time... Worked like a charm for me, and since gtrab is advising you to do the same, I guess it is 'normal' procedure ;-).

Enjoy!
[G2 and Desire Z Android Development] YOUNGTWAN:
ok i flashed it and then flashed it with the godsend.zip from sd but after reboot i i still have my g2 os
[G2 and Desire Z Android Development] gtrab:
check the easy tutorial (link in post 1)

please read the first post:

this is just the kernel, not full ROM, and this is not intended for G2
[G2 and Desire Z Android Development] simpelsense:
Hey there,

I was wondering if the rom works on the desire z from germany.

Thx for any reply.
[G2 and Desire Z Android Development] gtrab:
check your kernel number; it is taken from the current european generic kernel, so yes it works
[G2 and Desire Z Android Development] curbsam:
Hi gtrab, thanks for your patience. I believe the command to copy the edited 03gtrabOC file is

adb push 03gtrabOC /system/etc/init.d/03gtrabOC

?

For some reason it's accepting the edited version with a value of 74, or even decremental changes down to 72 or 70 but SetCPU still shows a max of 998MHz after I reboot the phone.

I have pulled the 03grabOC file back to windows at the \android-sdk_r07-windows\android-sdk-windows\tools folder where adb command is kept and it shows the edited value of 74 (or 72 or 70) so it's there but not recognising it?

I'm confused. If it's any help, the original 1Ghz file successfully booted but the phone would accept the 1.4Ghz and I have the same kernel spec, Htc Desire Z UK model as yours.
[G2 and Desire Z Android Development] gtrab:
Curiousñly enough, I can reproduce your issue (editing the file has no efect)

This write protect stuff is a hard *****...

This is what I am doing to change:

When I want to change from 1 to 1.4 or backwards, I flash the corresponding update zip

When I want to go back to stock 806MHZ, I delete 03gtrabOC

If you want to test other max speeds, please let me know and I can prepare an update zip with the requested max speed
[G2 and Desire Z Android Development] curbsam:
Is it simply a case of editing the 03gtrabOC file to the value I want (in windows) and then rezipping the whole package before flashing it on the phone?

If so then I can try it (hopefully tomorrow) and I'll let you know the results. Otherwise yes perhaps a 1.2Ghz speed? I had the phone at 1.34Ghz (val=70) as a temporary speed through a terminal emulator command, but obviously this reverts back to stock 806Mhz when you reboot the phone (or 998Mhz now thanks to your 1Ghz zip).
[G2 and Desire Z Android Development] gtrab:
as always, feel free to edit|improve|modify - rezip - resign

EDIT more info: I use daneshm90's update zip 2.0 manager

a couple of user have also asked for a 1.2 GHz option, I'll put it up
[G2 and Desire Z Android Development] gtrab:
1.2GHz version UP @ OP

Also, added a "how to" mini tutorial & FAQ at post 5 if you want to modify/edit these Update zips yourself and make your own versions

Have fun
[G2 and Desire Z Android Development] littleguo:
help..

hi all, my desire z seem to have a problem loading into recovery mode..

when i pressed ok in ROM Manager, the reboots... then there i see a black screen with a red triangle with an exclaimation mark on it... I search through the internet , they suggests that the device must be replaced inorder to solve the problem.. what should I do? seem to have no excuse to get a replacement for me if that's the case... please help /.\
[G2 and Desire Z Android Development] steviewevie:
You have flashed ClockworkMod to recovery, right ? And it didn't reboot into recovery when you tried it ? Just go back into ROM Manager and flash ClockworkMod again, the second time it'll work when you reboot to recovery.
[G2 and Desire Z Android Development] littleguo:
Recovery goes wrong

**sigh** doesn't work still, i tried the traditional way ( -vol and power ) into recovery... same thing happens... what is wrong with my device :(:(
[G2 and Desire Z Android Development] littleguo:
cont' of recovery mode..

then when i press ( +vol and power ) on the red triangle / exclaimation screen... it goes to >>>>

Android system recover <3e>

Reboot system now , Apply sdcard:update.zip , wipe data/factory reset , wipe cache partition....

at the bottom shows >>> E:Can't open /cache/recover/command
[G2 and Desire Z Android Development] gtrab:
as stevewevie said, you have not flashed clockworkmod correctly

flash it again

If it doesn't work, re-chech if you really have S-OFF
[G2 and Desire Z Android Development] curbsam:
Hi gtrab, just an update.

I downloaded the 1.2Ghz zip file, transferred it from the pc to the phone's sd card, flashed the zip file through rom manager, it rebooted and in less than 5 minutes I now have a 1209 Mhz max speed through SetCpu.

I still don't understand why the 1.4Ghz file didn't work (perhaps there's a bug and it needs re-zipping or the phone doesn't like it) but 1.2Ghz is plenty so now I'd like to say a massive thank you very much!

You're a star :)
[G2 and Desire Z Android Development] littleguo:
should the clockworkmod show HTC G2 ??

sorry that i'm asking so much... i'm a total noob on this...:(:(:(
[G2 and Desire Z Android Development] littleguo:
just want to say thanks for you and stevewevie's help~

works great!!! :p
[G2 and Desire Z Android Development] gtrab:
Yes its ok

I recommend you read the easy tutorial FAQ
[G2 and Desire Z Android Development] littleguo:
I sure will!!! thanks loads!!
[G2 and Desire Z Android Development] Bellkingsway:
I have to give props to the OP on this thread. I had issues doing it, but I followed through the thread and every question was answered.

Now to play with it and find more bugs :D
[G2 and Desire Z Android Development] Smartenup:
Thanks for all the hard work involved!

OK. I rooted, s-offed, installed 1.2GHZ flash update, all went well but when I open Setcpu, it's still at 806 and I can't adjust the upper scale. I must be missing something because the Desire z is alot faster now............ :)
[G2 and Desire Z Android Development] DanWilson:
Don't know if this has been asked,

but,

If I was to edit the SetCPU clock speed thing (just awake now...) for values going up every 50MHz, and set the governor to on-demand, would it go between all of them before going to 1400MHz?
[G2 and Desire Z Android Development] gtrab:
try sliding the "max" bar to the right in SetCPU

Sounds interesting, give it a try and pls report, I haven't done that
[G2 and Desire Z Android Development] DanWilson:
Afraid I can't do that. No DZ yet :(

I'm just brainstorming ideas that could help in future. Like if this worked, battery life would be better. I think...

:D
[G2 and Desire Z Android Development] Smartenup:
Did not work initially, was 806 max on slider then 528 for while but I toggled Perflock Disabler in setcpu menu and then I could slide the bar to 1209mhz, awesome!!! Thank you!
[G2 and Desire Z Android Development] GenghisZ:
You can make it so that the slider can be moved by 1 Mhz at a time, BUT....

It has no use... Since this kernel only has the folowing steps available: 245Mhz, 386Mhz, 768 Mhz and 1.4Ghz. Nothing in between. That means if you make a profile in SetCPU to clock your CPU to 806Mhz when screen is off, actually that will clock the CPU back to 768, since there is no 806Mhz step in this kernel.

Same for all the other values inbetween the steps supported by the kernel.

If you want more steps in between that actually work, then you will have to revert back to an older kernel that we have the source for.
[G2 and Desire Z Android Development] DanWilson:
So gtrab would need to update the modules so it has all the steps in?

I'd do that if I knew how. 1MHz jumps and all... :)
[G2 and Desire Z Android Development] GenghisZ:
From what I understand, the module can only alter the MAX OC speed, and does not influence the 'steps' possible.

This needs to be done in the Kernel itself. Since HTC did not release the source code for the DZ (at least not the correct one :p), this is not possible for the time being.

What you CAN do is revert back to an older kernel (that HTC released the source for), but from what I can see, this qlso gives you the 11:22:... Wifi MAC 'bug'.
[G2 and Desire Z Android Development] gtrab:
Maybe stridger could possibly help with a module update, that's out of my knowledge to date

We'd bettr wait for the kernel source (coolbho3000 has already shared the required overclocking kernel code)

IMO the kernel way would be easier and cleaner
[G2 and Desire Z Android Development] ericjosepi:
Hi gtrab,

I just wanted to (publicly) let you know that your guides are awesome and this Kernel Mod is fantastic. I've had my NAM/Bell Desire Z running at 1.4 GHz ondemand and it's running fantastically!

It's interesting that HTC would have the Desire (essentially a sense skinned N1) running at the full 1 GHz but throttle down the Desire Z to 800 MHz on what HAS to be a similar, if not the same, processor.

Anyway, keep up the fantastic work. I love this phone and suspect that it'll have a longer life span then my Hero. Especially with community members like you helping users like me get the most out of their phones.
[G2 and Desire Z Android Development] steviewevie:
The DZ's processor is a newer generation than the Desire's CPU. So even at 800 MHz it's a lot faster than the Desire.
[G2 and Desire Z Android Development] DanWilson:
I'd be cool with the MAC bug, but only if it gave me better OC support.

Anyone know when the real source will be released?

And how exactly is it not correct? (I thought someone had just decompiled the existing kernel or something...)
[G2 and Desire Z Android Development] hamish909:
I've having a lot of problems.

Phone had no previous modifications, then followed guide on page 1 - Rooted, S-Off (confirmed) and Flashed Clockworkmod Recover via Rom Manager, and applied the 1.4ghz zip.

USB Cable cannot be plugged into phone if during boot, otherwise phone freezes. If USB is plugged in AFTER booted, it's OK

Also I'm getting lot of 'lag spikes', can be seen when menu scrolling, browser scrolling, games, and also my Gallery is a lot slower now and doesnt' save thumbnails everytime I open Gallery?

I use SetCPU, tried all SetCPU settings but still having problems,

The only thing I see good now is applications load faster.

Help anyone?
[G2 and Desire Z Android Development] BiscuitBee:
Thank you so much! This really was "EZ" mode for overclocking my phone (Bell). I'll carry all three updates around for now and play around with it to get a feel for speed v. battery.

Running 1.4 Ghz and I can already notice difference!
[G2 and Desire Z Android Development] GenghisZ:
HTC comunicates they released the source on http://developer.htc.com/ , but actually the 'source' there is of kernel version 2.6.32.17, not of the stock rom shipped 2.6.32.21 kernel.

About decompiling: I have no idea on how that would work, but (at this time) I dont see it floating around on the forum either.

Did you try a factory reset already? Maybe something messed up in the process of rooting/s-off'ing/OC'ing. If that does not work: revert back to stock and see if you have these problems still.

Since you are the only person that reports these problems, I would guess something went wrong during the modifications. If that is not it, then my second guess would be faulty hardware...
[G2 and Desire Z Android Development] gtrab:
I've been testing the three posted speed sets (1GHz, 1.2GHz and 1.4Ghz)

My usage profile is minimally gaming, frequent doc editing / web browsing

To date I am experiencing better response and zero freezes/glitches/slowdowns with the 1.4GHz set (curiously enough... I expected that one to be problematic but nope), and more occasional freezes with the "intermediate" 1.2GHz set.

Of course "Mileage" and performance may vary from user to user,

I'd like to hear other's choices and experiences with the 3 currently posted OC speed sets, regaring games/web/other applications, etc
[G2 and Desire Z Android Development] GenghisZ:
I have not tried 1, nor did I try 1.2, but I am running 1.4 for the fifth day in a row now, and I have yet to experience the first 'freeze'. Everything runs very smooth. At first I was a bit reluctant because of the low number of 'intermediate steps' available, but actually, this does not seem to make a huge difference in battery life.

Thumbs up for a great job on this one!
[G2 and Desire Z Android Development] sonofabit:
I agree. I was running this with the MCR sense ROM for a few days, and it was fast, and still really good battery life. I switched to the Virtuous ROM for a couple of days, and even at 1GHz, the batter life was worse than this one is. I'm sticking with this one.
[G2 and Desire Z Android Development] Techdread:
Nice work, I have been using the 1GHz overclock for over a week now and it is very stable ;) I Tried the 1.4GHz Overclock but it hangs on boot up, it is not a corrupt file as i always do the relevant checks. Have just tried the 1.2GHz overclock and that is now working :cool:.

My phone gets a score of 1800 on quadrant standard at 1.0 GHz.

A Score of 2000 on quadrant standard at 1.2 GHz.

Would be nice if others would report what they are benchmarking especially at 1.4GHz.

Thanks for the easy rooting & oveclocking guides:D
[G2 and Desire Z Android Development] hamish909:
I'm using 1.4ghz I notice the phone freezes during boot if its is charging via computer or mains. If you plug the cable in after the phone has booted it's fine.
[G2 and Desire Z Android Development] timberman123:
I have used the 1ghz oc for about a day and after that I had set it to 1.2 ghz and stayed there for now. Phone is running great, very speedy and responsive though it already was at 800mhz. You can really notice the difference when I take my desire z and the one of my brother and startup for example Angry Birds.. guess whos phone has the fastest loading time:p.

I have made some profiles in setcpu, screen off=300mhz max and when on something like between 800 and the max 1200mhz. With the everage use of me I get around 15 to 20 hours from the battery.

Sent from my Desire Z@1.2ghz
[G2 and Desire Z Android Development] gtrab:
Every phone is different, the uncertaint factor remains undetected

Mine is a NAM D-Z and I don't have that problem with 1.4Gz

Some others are reporting they can't even flash the 1.4GHz update, only the other speeds

:confused:
[G2 and Desire Z Android Development] MacaronyMax:
Could anyone post a quadrant score at 1.4ghz :p Thank youu :)
[G2 and Desire Z Android Development] jubilleum:
Is 1.4 is fully safe?
[G2 and Desire Z Android Development] GenghisZ:
Just ran a full bench and it gave me 2133 as final score.

Usually I end up with a score somewhere between 1900 and 2300.

Is driving a car fully safe?

If your question is: will it void my warranty, then my theoretical answer would be 'yes'. If you find it 'unsafe' to void your warranty, then my theoretical answer to your question would be 'no, it is not fully safe'.

In my case, it did not blow up my phone, au contraire, it made it more enjoyable!
[G2 and Desire Z Android Development] gtrab:
I've been using it for a couple of weeks without incidents

You can also check the other overclocking threads at the general Desire Z forum for more user input
[G2 and Desire Z Android Development] gtrab:
My Quadrant scores

with the 1.0 GHz godspeed kernel update: 1436

with the 1.4 GHz godspeed kernel update: 2471 - what a boost

I'm happy :)

[EDIT] PS: I oppened a poll

http://xdaforums.com/showthread.php?t=857058
[G2 and Desire Z Android Development] alhimself:
easy over clock

hi great original post. i was hoping to to overclock my desire using the temp root and KShatzkes guide for easy streamlined overclock method and was wondering if i could use the oc-dz.ko module from your zip system/lib/modules/oc-dz.ko with this method. ie follow the above clock guide but use your .ko instead of the original .ko in the guide since my phone is on the 2.6.32.21-gd2764ed kernel and fireware (ie european desire z)

great .zip! but im taking baby steps here so im gunna stick with the temp root route for safety, although granted your method does sound very straight forward!

i also thought apache14's post was very interesting on overcloacking and voltage think he did it on a HD but wouldnt it be nice to do on the desirez/g2 as their the same chipset? overclocked but with lower voltage, save even more battery! as i said baby steps for me, but ill look into it down the line.

thanks and great work!

aL
[G2 and Desire Z Android Development] gtrab:
you've got a G2, so you'd need to flash a whole system with this kernel in order for this particular setup to work properly, otherwise you'll end messed up between the G2's older kernel and system files and the newe DZ kernel included into this update zip

regarding voltage tweak, I'd need the kernel source to do so, and it has not been released yet
[G2 and Desire Z Android Development] alhimself:
hi thanks for getting back to me, i dont have a g2 i have a european desire Z, i was only using the G2 guide as a reference as the process steps should be the same on the desire z except for people with a desire z where having problems with the process as the overclock modules provided in the above guide where for a G2. your up date includes a oc_dz.ko for the kernel my european desire z is running on. so i should be able to follow the guide above but swap in the .ko in your update instead of the G2 modules.

ie from the command prompt

adb push oc-dz.ko/data/local //where oc-dz.ko is from your update

su

insmod /data/local/oc-dz.ko

then using the gscripts for say 1.4ghz

rmmod oc-dz.ko

insmod /data/local/oc-dz.ko pll2_l_val=74

would this work with your module? or is it tailored specific to your method and process?

thanks again!

aL
[G2 and Desire Z Android Development] gtrab:
I've been digesting both links you provided

It seems like yes, KShatzkes's guide should work with this oc-dz.ko module

Regarding Apache14's notes, yes it should work too (changing the module volt parameters)

I'm gonna test that
[G2 and Desire Z Android Development] alhimself:
GREAT! ill try the overclock for the moment, thanks for the help, would be great if the volts worked too across both overcloaked and underclocked freqs, could save even more battery. but i dont know the ins and outs of how to do it myself, as in what commands to send, so ill leave that in your capable hands! if you do manage to test it though would love to know the process, ill keep my eyes pealed....

thanks very much!

aL
[G2 and Desire Z Android Development] Rickroller:
Ok..so I downloaded the 1.4 zip drive directly from the XDA app onto my phone. Went into ClockworkMod and did the Install ROM from SD. Everything appeared to work fine...phone rebooted into recovery mode (it did not just reboot as stated on page 1). From recovery mode I noticed an "update from zip" or something..but I never selected anything..just did a battery pull to exit bootloader, and everything booted up fine, except that with setCPU it appears i'm still running stock speed, because the max option is still 800Mhz. Any ideas what went wrong? Did I need to select the update when I was in bootloader? Thanks for any help..

EDIT: Nvm..I tried flashing it a second time and everything went according to plans this time around. SetCPU now registering 1400Mhz..woot woot! Thanks for the guides guys..much appreciated!
[G2 and Desire Z Android Development] Pouic:
1.2 & 1.4Ghz Works perfectly on Desire Z Euro :)

Thanks a lot !
[G2 and Desire Z Android Development] gtrab:
Sorry I have had no time to work on this, since the new gfree stuff is getting all of my time right now

I hope to come back to this during weekend
[G2 and Desire Z Android Development] sergioka:
Hi guys,

I have a little problem here.

I do everything like it is described here and after every flashing my phone boots until "HTC - quietly brilliant"

I've got the european Version of the Z.

What can I do know(restoring by backup works fine, but I want more power)

Thanks,

sergioka
[G2 and Desire Z Android Development] gtrab:
possibility a) are you sure you have s-off and root ?? (boot to bootloader and check if it says "S-ON" or "S-OFF" on the upper line; to check root, open the Superuser application)

possibility b) download the godspeed update zip again and CHECK the MD5 checksum to avoid a possibly corrupted download

possibility c) try with another SD card

possibility d) what's your kernel version ?? (check settings-> About phone-> Software info)
[G2 and Desire Z Android Development] sergioka:
Hi:)

a) S-OFF? check

b) MD5 checksum ok? check

c) currently non available

d) 2.6.32.21-gd2764ed

the 1.2 GHz Kernel does work, but why not the 1.4 GHz one? weird :)

thanks again
[G2 and Desire Z Android Development] steviewevie:
I think you or someone else might have mentioned this yesterday, but I wonder if you're unlucky and your phone simply can't handle the 1.4 GHz overclock ? That's more than 50% faster than stock, remember.
[G2 and Desire Z Android Development] gtrab:
Another user form the OVERCLOCKING POLL thread (at DZ general forum) said that he had the same problem,

What he did and reported working OK was this:

He flashed the 1.2GHz update first, then he flashed the 1.4GHz update over the 1.2GHz, and it worked for him.

Strange since both updates are IDENTICAL (except for the loading script GHz set), but at least this way worked for him...

I'm still breaking my head trying to understand why this happens to some users (I have counted 4 cases out of 325 downloads for the 1.4HGz update, that's 1 out of every 80).
[G2 and Desire Z Android Development] buzmay:
Hi I have tried all of this and my phone simply cant start up on the 1.4ghz.

Have also upgrade from 1.2 to 1.4 but nothing. Also with a completely different sd card, is quite weird is not working, I really wonder what can it be.

And the kernel version is : 2.63.32.21-gd2764ed htc-kernel@and18-2#1
[G2 and Desire Z Android Development] acritec:
I had the same problems. No way to get 1.4GHz to work while the lower speeds worked fine.

maus010 also had the same problems ( see his earlier posts n this tread )

And he posted in another thread

http://xdaforums.com/showthread.php?t=822908

that he applied RUU_Vision_HTC_WWE_1.34.405.5_Radio_12.28b.60.140e _26.03.02.26_M and after rooting and S-OFF again, overclocking worked OK
[G2 and Desire Z Android Development] Da9L:
Im about to install this wonderfull kernel :)

However i have this one question..

When i use ClockworkMod's Rom Manager and press "Install ROM from SD Card" it says that i first must have clockworkmods recovery installed before i can continue.. This is okay, but when the rom manager wants me to confirm phone model it displays only "HTC G2" which iam not sure my phone model is.. My model is European (Danish) HTC Desire Z..

Should i just select HTC G2 ? Is that safe enough?
[G2 and Desire Z Android Development] ludow:
That's ok. Just select G2. Like you have done alredi. :)
[G2 and Desire Z Android Development] sergioka:
thanks, i love you sir :D