[Q] Noob questions regarding S-Off - Desire Q&A, Help & Troubleshooting

I have a few questions regarding this and it is probably all common android knowledge but I am new to this so here we go,
First of all by turning it off would it allow me to remove default applications? (I am having trouble both with terminal and a root explorer to remove default apps, and am assuming it is because of S-On)
Secondly is there a method to achieve S-Off that isn't a bootable file? Both methods I have found require me to do this but the BIOS of the Laptop I am using now doesn't support usb booting and doesn't have a cd writer, I am stuck with this garbage untill I can replace my motherboard on my linux/win7 machine.
Lastly if there isn't a method to achieve S-Off without a bootable file, should I just use a VM? Are there any known issues with doing this?
Phone details:
Bravo PVT3 SHIP S-ON
HBOOT-0.93.0001

wad92 said:
I have a few questions regarding this and it is probably all common android knowledge but I am new to this so here we go,
First of all by turning it off would it allow me to remove default applications? (I am having trouble both with terminal and a root explorer to remove default apps, and am assuming it is because of S-On)
Secondly is there a method to achieve S-Off that isn't a bootable file? Both methods I have found require me to do this but the BIOS of the Laptop I am using now doesn't support usb booting and doesn't have a cd writer, I am stuck with this garbage untill I can replace my motherboard on my linux/win7 machine.
Lastly if there isn't a method to achieve S-Off without a bootable file, should I just use a VM? Are there any known issues with doing this?
Phone details:
Bravo PVT3 SHIP S-ON
HBOOT-0.93.0001
Click to expand...
Click to collapse
Go to revolutionary.io and read everything carefully. After that it's easy. After gaining S-off, flash custom recovery, then the zip (middle of FAQ page) to get root. Afterwards you can use either Titanium Backup or MyBackup to remove or freeze unnecessary apps. Good luck.
Sent from my HTC Desire using xda premium

wad92 said:
I have a few questions regarding this and it is probably all common android knowledge but I am new to this so here we go,
First of all by turning it off would it allow me to remove default applications? (I am having trouble both with terminal and a root explorer to remove default apps, and am assuming it is because of S-On)
Click to expand...
Click to collapse
Root is enough...
Did you try unrevoked method?
running under windows
S-OFF means to flash switch nand protection off for flashing radio, recovery, hboot (partition layout) etc
revolutionary.io
no bootable cd/usb needed
i did not use vm i can not confirm it is working properly, maybe somebody has

My device is already rooted with unrevoked but not fully which is why im trying to figure out how to do this, thank you for the link I will research further

wad92 said:
My device is already rooted with unrevoked but not fully which is why im trying to figure out how to do this, thank you for the link I will research further
Click to expand...
Click to collapse
Yes, fully. Root and s-off are different. It's easiest to be s-off and with root explorer to remove /system/apps but there are other ways, not as easy.
Or...
You could just freeze the apps with titanium backup. It hides them and stops them running.
You know deleting system/apps won't give you more space in itself though yeah?
Sent from my HTC Desire using Tapatalk

wad92 said:
My device is already rooted with unrevoked but not fully which is why im trying to figure out how to do this, thank you for the link I will research further
Click to expand...
Click to collapse
Now you should try download and install (through recovery or android market) superuser app, it's give you access to procected files in your phone.

michallp said:
Now you should try download and install (through recovery or android market) superuser app, it's give you access to procected files in your phone.
Click to expand...
Click to collapse
He is already rooted. This thread is about s-off, as per the title. Please read threads before posting your advice.
Sent from my HTC Desire using Tapatalk

Related

[Q] need help installing gingerbread keyboard

i have installed the gingerbread keyboard file on my sd card and have rooted my phone using the visonary method but now i cant seem to get into recovery mode. I have rom manager installed and have flashed clockwork recovery mode. it said that it had sucsessfully installed.
I then flashed it again as i read somewhere that i might need to do it twice as sometimes it dosent work.
when i now click on the recovery option in rom manager all i get is the red triange with the ! in the middle.
any ideas what im doing wrong?
Have tried reading the threads but with 30 plus pages i am now completley confused
Sounds like you don't have S-OFF. What does it say in HBOOT (e.g. hold down volume down and the power button with the phone powered off) ?
steviewevie said:
Sounds like you don't have S-OFF. What does it say in HBOOT (e.g. hold down volume down and the power button with the phone powered off) ?
Click to expand...
Click to collapse
thanks for the quick reply, i think from what i have read that this s-off thing maybe the problem.
can you tell me how do this please
simple steps please as i am struggling with this
just done the hboot hing and at the top of screen it says
vision pvt ship s-on
hpsauce37 said:
thanks for the quick reply, i think from what i have read that this s-off thing maybe the problem.
can you tell me how do this please
simple steps please as i am struggling with this
Click to expand...
Click to collapse
It's a bit confusing because there is more than one way to do this. But by far the safest way is to follow the guide at http://forum.xda-developers.com/showthread.php?t=857390
Have a good read, then if you're not sure, ask questions in that thread on the process.
steviewevie said:
Sounds like you don't have S-OFF. What does it say in HBOOT (e.g. hold down volume down and the power button with the phone powered off) ?
Click to expand...
Click to collapse
S-OFF is a completely different animal. Don't get it confused with being able to boot into recovery.
Sent from my EVO using Tapatalk Pro
rwcj63 said:
S-OFF is a completely different animal. Don't get it confused with being able to boot into recovery.
Click to expand...
Click to collapse
I didn't think you could flash recovery without S-OFF though ? Surely ROM Manager doesn't have the ability to write to the NAND, since the write protection will be on if you're at S-ON ?
steviewevie said:
I didn't think you could flash recovery without S-OFF though ? Surely ROM Manager doesn't have the ability to write to the NAND, since the write protection will be on if you're at S-ON ?
Click to expand...
Click to collapse
Again. S-OFF is a different issue altogether. Being able to write to NAND is a part of the rooting process. Setting security off is not a part of the rooting process. It's a totally different process for a totally different purpose. The caveat would be if unrevoked has been revised to full root and set S-OFF during the same process. I haven't used it in awhile so on that point, I'm not certain.
Sent from my EVO using Tapatalk Pro
rwcj63 said:
Again. S-OFF is a different issue altogether. Being able to write to NAND is a part of the rooting process. Setting security off is not a part of the rooting process. It's a totally different process for a totally different purpose. The caveat would be if unrevoked has been revised to full root and set S-OFF during the same process. I haven't used it in awhile so on that point, I'm not certain.
Click to expand...
Click to collapse
Sorry but that's not right for the DZ/G2. I wonder if you're thinking of how it works on a different Android phone ? The security has been increased on the DZ/G2/DHD compared to, say, the original Desire.
Writing to the system and recovery partitions isn't possible until you get S-OFF. This has nothing to do with rooting, it it because of the increased security on these phones where the NAND is in a hardware write-protect mode for those partitions by default. You can appear to write to the partitions, but it's actually going to cache and is lost when you reboot, until you get S-OFF.
steviewevie said:
Sorry but that's not right for the DZ/G2. I wonder if you're thinking of how it works on a different Android phone ? The security has been increased on the DZ/G2/DHD compared to, say, the original Desire.
Writing to the system and recovery partitions isn't possible until you get S-OFF. This has nothing to do with rooting, it it because of the increased security on these phones where the NAND is in a hardware write-protect mode for those partitions by default. You can appear to write to the partitions, but it's actually going to cache and is lost when you reboot, until you get S-OFF.
Click to expand...
Click to collapse
Actually yes. S-OFF on the EVO is to make sure no matter what, you're always rooted. It came about after the new stock flash would unroot the phone. With S-OFF active, you can flash any stock rom and not lose root. All you would need to do is reflash RA or Clockwork to get back to recovery and flash roms again. Unrevoked forever is the program we used to change the security setting.
So. That is only true for the EVO?
Sent from my EVO using Tapatalk Pro
rwcj63 said:
Actually yes. S-OFF on the EVO is to make sure no matter what, you're always rooted. It came about after the new stock flash would unroot the phone. With S-OFF active, you can flash any stock rom and not lose root. All you would need to do is reflash RA or Clockwork to get back to recovery and flash roms again. Unrevoked forever is the program we used to change the security setting.
So. That is only true for the EVO?
Sent from my EVO using Tapatalk Pro
Click to expand...
Click to collapse
yeah I think so.
The new HTC Desire Z and HD had "better" security from htc, basically you can't write anything to nand (/system) until you perma rooted, even then some things such as recovery needed s-off before we could write to that partition.
im going to have to give up on this
i have tried to follow the guide to get s-off but i find it too complicated. I have my phone rooted with visionary but i think thats as far as im going to get.
tried to install the adb thing and get that working but it never recognises the phone. when i remove the drivers and plug it back in then windows automatically installs the drivers again so i never have the option to manually instll them.
this is just becoming a nightmare
someone make it simple for me please....the thread is pages and pages long and even then it seems there are problems
hpsauce37 said:
im going to have to give up on this
i have tried to follow the guide to get s-off but i find it too complicated. I have my phone rooted with visionary but i think thats as far as im going to get.
tried to install the adb thing and get that working but it never recognises the phone. when i remove the drivers and plug it back in then windows automatically installs the drivers again so i never have the option to manually instll them.
this is just becoming a nightmare
someone make it simple for me please....the thread is pages and pages long and even then it seems there are problems
Click to expand...
Click to collapse
Have you tried my guide on adb ? http://forum.xda-developers.com/showthread.php?t=865685
OK, I can use some help too
I have a DZ with stock ROM, root and s-off and CWR.
In my enthusiasm that I knew how to flash rom updates with clockwork (I am running the Godspeed 1Ghz) I downloaded the Gingerbread keyboard rom update from the G2 forum. I think I jumped off a bit too fast...
And now I am stuck in an infinite boot loop. I can get into Clockwork recovery but it just loops the "HTC Quietly Brilliant" forever including the annoying boot sound...
I tried some suggestions to download and reflash a second time, no effect.
I tried to mount /system before flashing, no effect.
Am I forced to go back to factory now?
Also, I found 2 gingerbread keyboards, one in the G2 forum and one over here.
Anyone know what the difference is? They have a different filesize..
Any help is welcome...
*edit*
OK so now I read that it is only to be flashed on a non-stock ROM... so I am now flashing Cyanogen 6.1
try wiping all the caches...
Lennyuk said:
yeah I think so.
The new HTC Desire Z and HD had "better" security from htc, basically you can't write anything to nand (/system) until you perma rooted, even then some things such as recovery needed s-off before we could write to that partition.
Click to expand...
Click to collapse
Wow. I'm really sorry guys. I never knew that's how non evo worked. That totally sucks.
Sent from my EVO using Tapatalk Pro
rwcj63 said:
Wow. I'm really sorry guys. I never knew that's how non evo worked. That totally sucks.
Click to expand...
Click to collapse
S'alright.
HTC really ramped up the security on these new phones, as Lenny said, with this hardware write-protection on certain partitions. But even given that, I was amazed by just how quickly the guys on the #G2ROOT IRC channel, especially Scotty2, managed to crack it !
It also looks like they've opened the phone even wider than many others before, with the "true" radio S-OFF that they achieved.
You can read up all about it in the Wiki - http://forum.xda-developers.com/wiki/index.php?title=HTC_Vision

[Q] Problem with unrevoked

I tried rooting with unrevoked, it said Done on the screen (PC) but it actually hasn't rooted it. After researching it appears it need to "finish it off" and use unrevoked forever (http://unrevoked.com/rootwiki/doku.php/public/forever) which i tried but I get an error Got Radio version 5.11.05.27 E:unsupported system e:update failed
any ideas?
Are you sure your not mixing rooting and S-offing up? Unrevoked forever will only work on CDMA phones.
What happens when you download terminal emulator and type: su
themikeyboosh said:
I tried rooting with unrevoked, it said Done on the screen (PC) but it actually hasn't rooted it. After researching it appears it need to "finish it off" and use unrevoked forever (http://unrevoked.com/rootwiki/doku.php/public/forever) which i tried but I get an error Got Radio version 5.11.05.27 E:unsupported system e:update failed
any ideas?
Click to expand...
Click to collapse
Unrevoked is only a soft root for the desire, if you want full root, after using unrevoked, search for alpharev to complete the procedure, unrevoked forever is not supported on a gsm desire
Sent from my HTC Desire using Tapatalk
Probably. Yeah i just read it's only the desire cdma that is supported.
oh......a dialog box popped up saying will you allow blah blah
confused. i want to edit the gps.conf file using android commander but that says i need root. so what has unrevoked done? i thought that rooted it
You are rooted and can use most apps that require root, but you can not write to the system partition while booted. If you need to do anything to the system partition do it while in recovery or use [AlphaRev] Public release S-OFF HTC Desire GSM. Just make sure you really know what you are doing before S-offing your device.
Soft root only allows R/W access to /system when in recovery, if you wan full access like i said try alpharev
Sent from my HTC Desire using Tapatalk
thanks. how do i write to it in recovery? i don't fancy doing that AlphaRev thing
You need to get familiar with ADB. Do some searching on that. This might also help you to get started.
Also make a nandroid backup before you edit anything on the system partition in case you (accidentally) mess something up, this why you can alway revert back.
If you new to nandroid as well, some searching on that should also give all the answers needed.

[Q] root explorer aint working! help!

im on redux 1.1.2 and wanted to make the keyboard manager (found here working.
however moving the .apk from /data/app/ to /system/app doesnt work for whatever reason. i tried root explorer and super manager as well.
cutting out the file and trying to past it in the other folder it seems to work, gives no error message but i cant see the file being moved and when i navigate back to /data/app its still sitting there.
of course, root access is enabled, so that cant be the problem here.
does anyone know how such a basic and simple function continously fails? im absolutely by this and need a solution asap.
Do you have write access to /system?
Year nothing is wrong with root explorer. To test try moving a file from /data/app to sdcard.
But in order to write to /system you need your bootloader to be s-off, and it's surprising how many people don't know this and just try using such apps without thinking.
check that you have enabled "remount as R/W"
mortenmhp said:
Year nothing is wrong with root explorer. To test try moving a file from /data/app to sdcard.
But in order to write to /system you need your bootloader to be s-off, and it's surprising how many people don't know this and just try using such apps without thinking.
Click to expand...
Click to collapse
you are onto something. checked my bootloader and that thing is s-on
i could swear it used to be s-off when i checked last time, but yes that was some time ago.
so now its s-on and i need it to be s-off.
found http://alpharev.nl/ and there a hboot reflash utility but ... well i download on ubuntu and all it gives me is an very useless .iso file. extracting contains no file i actually can run.
the website guide couldnt be any worse, black background and small white font, its not what im looking for on a lazy sunday
so in short: is there an easy + fast way to get a s-on device s-off. easy and fast means no nandroid backup, no normal backup, no factory resets or whatever.
mclaren2 said:
you are onto something. checked my bootloader and that thing is s-on
i could swear it used to be s-off when i checked last time, but yes that was some time ago.
so now its s-on and i need it to be s-off.
found http://alpharev.nl/ and there a hboot reflash utility but ... well i download on ubuntu and all it gives me is an very useless .iso file. extracting contains no file i actually can run.
the website guide couldnt be any worse, black background and small white font, its not what im looking for on a lazy sunday
so in short: is there an easy + fast way to get a s-on device s-off. easy and fast means no nandroid backup, no normal backup, no factory resets or whatever.
Click to expand...
Click to collapse
.iso is an image file, so you need to burn it onto a cd/bootable use-stick and then boot from it.
Tillus said:
.iso is an image file, so you need to burn it onto a cd/bootable use-stick and then boot from it.
Click to expand...
Click to collapse
and for what reason? will it boot me into some cmd prompt kinda thing where i have to enter some command lines?
and if so which ones? wil i be able to keep all my data on the desire?
mclaren2 said:
and for what reason? will it boot me into some cmd prompt kinda thing where i have to enter some command lines?
and if so which ones? wil i be able to keep all my data on the desire?
Click to expand...
Click to collapse
First of all, do a nandroid backup, then you keep your data.
It won't give you a command line, it will automatically start the s-off-program. You basically connect your phone, hit Enter, then wait a few minutes and dont touch anything.
But I really recommend some reading about in this forum about this. You might need to get fastboot running on your computer to flash a new recovery, so make sure you have all needed drivers and the recovery image (of the same recovery you are using now, otherwise you probably can't restore nandroid) handy before you start.
But I really recommend some reading about in this forum about this. You might need to get fastboot running on your computer to flash a new recovery, so make sure you have all needed drivers and the recovery image (of the same recovery you are using now, otherwise you probably can't restore nandroid) handy before you start.
Click to expand...
Click to collapse
i looked arround a bit but found nothing really usefull. googling for fastboot even brings up wrong results things which have definitely nothing to do with htc desire or s-off.
is fastboot that adb thingy i need to get to work and which is said to not work properly on ubuntu 10.10? then i ditch all that stuff and will forget about it.
the lack of answers seems to suggest that no one is really sure if it will work or not.
seems to be a big risk and not worth wasting any more time.
thanks for your help nevertheless.
Well, search for the S-OFF guide in the Developmenet section.
Basically, you just wait. That's it.
davebugyi said:
Well, search for the S-OFF guide in the Developmenet section.
Basically, you just wait. That's it.
Click to expand...
Click to collapse
no its just difficult to find a s-off guide in this forum if the search function wont accept s-off entered
anyway found me a nice guide there:
http://www.addictivetips.com/mobile/gain-s-off-on-htc-desire-gsm-with-alpharev-1-8-custom-hboot/
thats how a guide should be written imho. now im gonna give it a try as it sound simple ennough there.
success
now lets see if i can move the keyboard manager apk to /system/app
works as well.
mortenmhp said:
Year nothing is wrong with root explorer. To test try moving a file from /data/app to sdcard.
But in order to write to /system you need your bootloader to be s-off, and it's surprising how many people don't know this and just try using such apps without thinking.
Click to expand...
Click to collapse
You just answered to my question which bothered me for q while now. Thanks a lot. Thing is you can't know these things unless someone answers or you just stumble upon it, just like me now. Thanks again matey.
Sent from my HTC Desire using XDA App

Droid Incredible 1 - No Recovery Mode

Ok I'm going to try to explain this as simply as I can. First let me start by stating that I have searched high and low through XDA and about a dozen other websites in two hours with NO luck.
First, I downloaded CM7 and installed ClockWorkMod Recovery.
Second, I had it reboot in to recovery only to find myself staring a black screen with white bars. Upon further research I come to find that this panel type (slcd) is incompatible with recovery console (RLY?!) and that I am looking at the recovery console, its just blocked by a huge black image.
Third, I take it upon myself and figure I can just use ADB/SDK to flash this friggin' thing through the CMD prompt. But Ha-Ha this is not possible as I have S-ON listed in the HBOOT Menu
Fourth, I found a way to switch to S-OFF but come to find two things. One, this requires use of the recovery console which is inaccessible to me. Secondly, under the "Compatibility" list for the Droid Inc1 on Unrevoked Forever's site, it does not have the most recent Radio listed (Mine is currently 2.15.10.10.07.07 and theres no way in hell I'm attempting this with that said)
Does anyone have any suggestions or should I just give up?
Since your s-on you will need to do an ruu.exe, the one with your pc. (http://pvillecomp.com/?page_id=22) This will get you back to stock recovery. If you then want to go s-off you will need to downgrade with scottys downgrade tutorial found in the general section i believe, and then use unrevoked to gain s-off and root.
Thank you sir
I already had root through Unrevoked 1-click, I'll try this and see if I can flash Cyanogen through the ADB Shell.
Thanks!
Nechen said:
Thank you sir
I already had root through Unrevoked 1-click, I'll try this and see if I can flash Cyanogen through the ADB Shell.
Thanks!
Click to expand...
Click to collapse
I am not sure what you mean by having root and CM7? You mention in the OP that you still have S-ON? Not sure how you rooted and flashed an alternate ROM with S-ON...
Sent from my Dell Streak 7 using Tapatalk
WookieFan said:
I am not sure what you mean by having root and CM7? You mention in the OP that you still have S-ON? Not sure how you rooted and flashed an alternate ROM with S-ON...
Sent from my Dell Streak 7 using Tapatalk
Click to expand...
Click to collapse
I think you might be confusing S-off with Root, the two are not synonymous.
I had s-on the entire time, I just realized it about a month ago, I still had recovery, custom roms, ect.

[Q] What can be done with a rooted wildfire s?

Newbie here (go easy) lol OK basically I rooted via the HTC Bootloader website and other tools. Now What can I do with it basically? It is still got the S-ON Lock (which I guess is bad) I know it's unlocked to any sim but I understand my phone needs to be S-OFF to achieve real benefits?
when your phones rooted, it just means you have superuser access.
so your able to install custom roms (as you can see the list of diffrent roms) meaning you can install the latest build of android os. then you can install overclocked kernals (making your phone run faster or smoother). with other phones such as my nexus one iv install ubuntu (a linux operating system)
theirs so many diffrent things you can do on a rooted phone
S-ON S-OFF thing what does that mean? As I said My phone is still at S-ON Which I guess is not good
Your phone stay S-off like all people who unlock their phone on htcdev. But you can root and flash rom and kernel... There's always few thinks you can't do, but so usefully or necessary... AFAIK.
EDIT: sorry, would mean S-on
Sent from my HTC Wildfire S using XDA App
I still know that I having some memory issues (internal) so that I need to look at but slowly getting there. Done the main thing which is vital
john_semple said:
S-ON S-OFF thing what does that mean? As I said My phone is still at S-ON Which I guess is not good
Click to expand...
Click to collapse
S-ON means that the "Security is ON" aka that your phone is "locked",
from htcdev.com:
Your device is shipped with Security on (S-ON) to protect your system
software configuration (such as the bootloader, radio, boot, recovery, system and others). After you have unlocked the bootloader, however, you will have lifted the restrictions on boot, recovery and system. This means you can customize boot, recovery and system images on your phone as you desire. You can easily see that you have successfully unlocked the bootloader by looking at the top of the screen when entering the bootloader screen. Security is left on to protect things like the radio, and SIM lock.
Click to expand...
Click to collapse
You can set your phone to S-OFF by using Bootloader or some other methods
EDIT: I didnt see Shywim's post, i needed few min to post this. xD
S-ON = Security On
S-OFF = Security Off
When S-OFF you have access to the /system partition
You can do a sdcard partition for your internal memory... There is a howto in the cm7 troubleshooting topic in the dev section
( i use it and I'm s on like you)
Sent from my HTC Wildfire S using XDA App
KillAHead said:
S-ON means that the "Security is ON" aka that your phone is "locked",
from htcdev.com:
You can set your phone to S-OFF by using Bootloader or some other methods
Click to expand...
Click to collapse
Hi, you make me confused, if mob is s-on , you can make it s-off only trough xclip.
However you can unlock bootloader and root. as said in the link you gave.
If iam misstaken, please say so.
Start browsing:
[INDEX] roms/recovery/guides/kernel/root/...
But be careful if you're a noob. The Wildfire S makes a great, inexpensive Android but an awfully expensive brick.
CafeKampuchia said:
Start browsing:
[INDEX] roms/recovery/guides/kernel/root/...
But be careful if you're a noob. The Wildfire S makes a great, inexpensive Android but an awfully expensive brick.
Click to expand...
Click to collapse
Took me a while to get this replacement Wildfire back as it was due to a major hassle with HTC in the first place I just need to get my memory issues sorted and I sure i'm good
Went out and bought a 16GB Micro SDHD Memory card from ebay with an adapter included. When that comes i'll have fun (as I think I got a rough idea what rom I putting on to the phone) Prey to god it actually works!
There's lots of conflicting info on this thread..
Rooted means superuser access, think of it as administration rights on your mobile. You can install more powerful apps to your phone linked link2sd. You also gain write access to the system directories of the phone, and can delete system apps.
S-off means your bootloader is unlocked. This is required to flash custom rom's onto the device.
Sent from my HD2 using XDA App
jwchips said:
There's lots of conflicting info on this thread..
Rooted means superuser access, think of it as administration rights on your mobile. You can install more powerful apps to your phone linked link2sd. You also gain write access to the system directories of the phone, and can delete system apps.
S-off means your bootloader is unlocked. This is required to flash custom rom's onto the device.
Sent from my HD2 using XDA App
Click to expand...
Click to collapse
That's not correct, S-OFF does not stand for unlocked bootloader.
And you don't need S-OFF for flashing custom ROMs.
jwchips said:
There's lots of conflicting info on this thread..
Rooted means superuser access, think of it as administration rights on your mobile. You can install more powerful apps to your phone linked link2sd. You also gain write access to the system directories of the phone, and can delete system apps.
S-off means your bootloader is unlocked. This is required to flash custom rom's onto the device.
Sent from my HD2 using XDA App
Click to expand...
Click to collapse
There is a lot of conflicting info on this thread.
S-OFF means EVERYTHING is unlocked including your bootloader. It is complete access to all areas of the phone, also allowing you to flash any RUU ROM you want and many other things.
HTCDev Unlock - Unlocks your bootloader only allowing you to flash custom recoveries, ROMs, and root your phone. It has limitations though.

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