Question on Having s-off - Sprint HTC 10 Questions & Answers

Is s-off required to flash roms? Having a sprint HTC 10 was wondering if I can just unlock bootloader,flash recovery,and have root? And still okay to flash a rom? Or is having s-off required

No S-off is not required to flash ROM's.
Sent from my HTC 10

S-Off is not required mate, just unlocked my bootloader through HTC Dev and flashed TWRP and Bad Boyz.

marcviado said:
Is s-off required to flash roms? Having a sprint HTC 10 was wondering if I can just unlock bootloader,flash recovery,and have root? And still okay to flash a rom? Or is having s-off required
Click to expand...
Click to collapse
Thanks guys

nope, but it makes things easier. basically s-offing allows you to to flash a rom with kernel included. s-on devices need to push the boot.img which can be viewed as an extra step, in the overall process. honestly if you dont see a need to s-off (which stands for security off) dont. you might need it if youre developing things that require deeper system access but other than that its more of a convenience.

Related

[Q] Kernel Issues and HBOOT

Hey all. I've been unable to flash any kernels except for the stock one and Baconbits. All others but my phone in a perpetual bootloop. I'm using compatible kernels, but it seems any that write a boot.img makes this happen (though I may be wrong on that). Does this have anything to do with the fact I have HBOOT Version .82? I've noticed in most people's screenshots that after they did S-Off, they have .76. Could this be the issue and if so, ho can I downgrade it? Thanks!
Anyone? I've looked around but haven't heard anything with this specific problem.
Sent from my T-Mobile G2 using XDA App
0.76 is the engineering hboot for the G2, with S-OFF. I recommend though that you look at the new "gfree" method of getting S-OFF, which also gives you SIM unlock, SuperCID etc. It's much safer than the eng hboot, though the eng hboot does have some extra functionality.
I don't need the SIM unlock, so I didn't think the gfree method was needed. With that though, I'm on HBOOT .82, and have S-OFF. How can I get it to .76 and S-OFF?
You've got a G2, not a DZ, right ? I'm not sure how you can have the .82 HBOOT and have S-OFF unless you've run gfree ? I might be missing something though.
The gfree method is a much safer way of getting S-OFF, even if you don't need to SIM unlock.
steviewevie said:
You've got a G2, not a DZ, right ? I'm not sure how you can have the .82 HBOOT and have S-OFF unless you've run gfree ? I might be missing something though.
The gfree method is a much safer way of getting S-OFF, even if you don't need to SIM unlock.
Click to expand...
Click to collapse
Yes I have a G2, and I used this http://forum.xda-developers.com/showthread.php?t=833965 to get S-OFF. Am I supposed to have .82? The reason I doubted myself in the first place is that all the screenshots I've seen people have .76 and S-OFF.
phoenx06 said:
Yes I have a G2, and I used this http://forum.xda-developers.com/showthread.php?t=833965 to get S-OFF. Am I supposed to have .82? The reason I doubted myself in the first place is that all the screenshots I've seen people have .76 and S-OFF.
Click to expand...
Click to collapse
I can only assume there's another engineering hboot version, at 0.82 with S-OFF for the G2 ? Sorry, having a DZ myself I'm not so familiar with the exact HBOOT levels on the G2 (since that's one difference from the DZ), but I'm sure someone else can help you with that shortly.
I recommend using gfree though, because with a proper radio S-OFF (not a kind of "fake" S-OFF via HBOOT) it will be a lot easier to recover your phone if somehow you semi-brick it.
steviewevie said:
I can only assume there's another engineering hboot version, at 0.82 with S-OFF for the G2 ? Sorry, having a DZ myself I'm not so familiar with the exact HBOOT levels on the G2 (since that's one difference from the DZ), but I'm sure someone else can help you with that shortly.
I recommend using gfree though, because with a proper radio S-OFF (not a kind of "fake" S-OFF via HBOOT) it will be a lot easier to recover your phone if somehow you semi-brick it.
Click to expand...
Click to collapse
but what if i don't want to sim-unlock it? or do u have an option to opt-out the other unlocks?
If you use the gfree program its all automated for you. However you CAN do it manually by following the directions in the wiki. You would really need to understand what you are doing before you try to skip steps to only turn s off. Is there some reason you really dont want sim unlocked?
Sent from my HTC Vision using XDA App
shortlived said:
If you use the gfree program its all automated for you. However you CAN do it manually by following the directions in the wiki. You would really need to understand what you are doing before you try to skip steps to only turn s off. Is there some reason you really dont want sim unlocked?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
well im rooted now with very detailed help from unlockr.com (w/o SIM unlock).. and i dont care for sim unlock at this time since im not leaving the county or switching carriers anytime soon.. so yea.
J-Hop2o6 said:
well im rooted now with very detailed help from unlockr.com (w/o SIM unlock).. and i dont care for sim unlock at this time since im not leaving the county or switching carriers anytime soon.. so yea.
Click to expand...
Click to collapse
So did you install the engineering hboot to get S-OFF ? Because if not, I highly recommend gfree. It's safe and it'll put your phone into a better state if anything bad does happen to it in the future (e.g. semi-brick), even if you don't want the SIM unlock. It gives you a proper radio S-OFF, the engineering hboot is kind of a fake S-OFF (because it reports S-OFF even though the radio is actually still S-ON).

Solution to S-OFF HTC Aria

This link tells you how to S-OFF HTC Aria with HBOOT 1.02.0000: http://forums.phone-tools.cn/showthread.php/32100-htc-liberty-hboot-1.02.0000. This will allow flashing custom recoveries (then roms, etc.).
wow. I would much rather pay $99 for the HTC inspire, which doesn't need some ridiculous piece of equipment to S-OFF.
thanks for the info though.
So basically with this tool you can downgrade to 2.1 then root if you are stuck with AT&T ****ware from 2.2.2?
04SVTCobra said:
So basically with this tool you can downgrade to 2.1 then root if you are stuck with AT&T ****ware from 2.2.2?
Click to expand...
Click to collapse
Once the Aria is S-OFF, you could flash ClockworkMod recovery and then install any rooted ROM of your choice. You wouldn't have to downgrade to the original 2.1 ROM and go through the original rooting process.

[Q] i really need some help !!!!!!!!!!!

the situation
i have a My touch 4g that i some how by the grace of God have rooted and unlocked the bootloader and i downgraded to 2.2.1
the problem
i have tried to flash several roms but only one stuck and flashed correctly which
is called glacier cream 7.1 CM based 4.0.3 but to even get that to flash i had to
flash the rom then flash the recovery img through adb. so now this rom has no camera and wifi wont work a new rom has come out and when i try to flash it i get this error and cant get passed it
ClockworkMod Recovery v5.0.2.7
--Installing: /sdcard/IcecoldSandwich-For_MT4G_
5.5.AOKP-singed.zip
Finding update package...
Opening update package...
Installing update...
assert failed:getprop("ro.product.device")=="
glacier" || getprop(ro.build.product") =="glac
ier
E:Error in /sdcard/IceColdSandwich-For_MT4G_5.5.
AOKP-singed.zip
(status 7)
Installation aborted.
if anyone can please tell me what i can do or if there is anything i can do
im a noob i only know a lil adb lingo and barely got this thing rooted and downgraded also my bootloader specs are this
***UNLOCKED***
GLACIER PVT SHIP S-ON
HBOOT-0.89.007
MICROP-0429
RADIO-26.13.04.19_M
eMMC-boot
Dec 13 2011,21:07:39
also i have CWMR installed
if someone could help me please i would be very greatful
thank you
First your S-ON so u have to do it using Adb
Second the file you downloading probably didn't finish downloading or is corrupt try downloading again.
Third: Your phone is ok the camera and wifi are known not to work for that ROM you flashed.
Sent from my HTC Glacier using xda premium
...Awesome... said:
First your S-ON so u have to do it using Adb
Second the file you downloading probably didn't finish downloading or is corrupt try downloading again.
Third: Your phone is ok the camera and wifi are known not to work for that ROM you flashed.
Sent from my HTC Glacier using xda premium
Click to expand...
Click to collapse
thanks for the reply but how do you flash a rom through adb ?
and there is no way to get my s-off ?
No, because you're unlocked through HTCDev tool.
You need to relock and downgrade to have S-OFF.
And your problem is - since you're unlocked by HTCDev, you need to flash kernels manually, using fastboot. Google it.
And your other problem is posting questions in General section instead of Q&A, and giving your thread a crappy title to add to it.
You said unlocked bootloader? Is that via HTC?
Sent from my MyTouch 4G using xda premium
jjbadd385 said:
You said unlocked bootloader? Is that via HTC?
Sent from my MyTouch 4G using xda premium
Click to expand...
Click to collapse
yes i unlocked through the HTC.dev site i thought that was the only way until i found this other thread on how to do it manually
Jack_R1 said:
No, because you're unlocked through HTCDev tool.
You need to relock and downgrade to have S-OFF.
And your problem is - since you're unlocked by HTCDev, you need to flash kernels manually, using fastboot. Google it.
And your other problem is posting questions in General section instead of Q&A, and giving your thread a crappy title to add to it.
Click to expand...
Click to collapse
OK thanks for the help,thought this is were you post for help .....sorry about that
and as far as my title well that's what i need so that's what i asked for sorry if it was to crappy
so if a Moderator could please move this to the Q&A section that would be great and sorry about the post in wrong place like i said im still new to this .
and i did downgrade to 2.2.1 from 2.3.4 unless i did something wrong there ?
Maybe go back to stock and re-root? Lots of info here
Yes, you did wrong. If you have HBOOT 0.89.0007 - means you have the most updated HBOOT, and if you'd downgrade properly - you'd have HBOOT 0.86.0000.
You can still attempt to run gfree, but I doubt it'll do you any good.
You have 2 choices:
1) Stick with current setup and flash kernels from fastboot each time, like I said.
2) Modify misc_version again, relock bootloader, run "dowgrade" again, temp-root with Visionary and perm-root with gfree, following one of the many guides.
Your ROM won't flash, because it assumes something being written in the special file that describes the device as Glacier, but this assumption fails (most likely because the build you flashed previously messes something up in this file).
The other ROMs don't work, because you're not flashing the kernel.
Do some reading, please.
I can tell you this from experience, but I don't suggest you do anything until you calm down, gather your thoughts, and read some posts on this until it makes sense to you.
I had unlocked my bootloader via HTC. Then I realized it wasn't the best way, so I started doing this & that and having all sorts of issues. Only when you are ready, you need to relock your bootloader and then follow the very detailed guides on here to root and install the engineering hboot. I couldn't get s-off or downgrade to 2.2.1 until I relocked my bootloader. I don't know if that is the case for everyone, I only know I failed at every attempt to downgrade, until I relocked it. But please, be patient and try to read and understand a little before you attempt anything further.
Sent from my Black Ice'd Glacier using xda premium

[Poll] [S-OFF] Development

Hi,
Just wanted to see how much interest is there in getting S-OFF for our HTC One phones. I personally could use this for testing Tmobile radios on the HTC Dev Edition phones. What are some of your interest and thoughts about S-Off. Most importantly, why is it important to you?
Interest? Sure. Able to do it? No idea. The HoX is still locked up tight. And for most people, S-Off would just mean easier to flash kernels, ability to flash radios and downgrade HBOOT so that it says LOCKED instead of RELOCKED for warranty purposes.
ArmedandDangerous said:
Interest? Sure. Able to do it? No idea. The HoX is still locked up tight. And for most people, S-Off would just mean easier to flash kernels, ability to flash radios and downgrade HBOOT so that it says LOCKED instead of RELOCKED for warranty purposes.
Click to expand...
Click to collapse
Could you please educate me more about the HoX? Thanks
Becool0130 said:
Could you please educate me more about the HoX? Thanks
Click to expand...
Click to collapse
Most HTC devices now are S-On (at least the recently released ones from 2011-2013). What they do have though is an unlocked bootloader. That means you can install a custom recovery like CWRM or TWRP, and you can flash kernels through Fastboot. S-Off gives the ability to flash kernels from within the recovery (Fastboot requires a USB cable and a computer) and also the ability to flash radios.
With the HoX (HTC One X, and all phones unlocked through HTCDEV), when you unlock your bootloader it will say UNLOCKED (as opposed to Locked when stock). Relocking the bootloader will say RE-LOCKED, but not LOCKED. This means HTC can see that you have unlocked the bootloader and they can, and depending on luck, wil reject your warranty claim.
With S-Off we can overwrite the HBOOT and downgrade to an older version where it still says LOCKED, send that back for warranty and all will be well
Not sure about the Tegra3 version of the HOX, but the S3 version of the HOX has achieved S-OFF for awhile now. There is definitely interest in ALL HTC devices to achieve S-OFF. Just a matter of time before devs crack the code.
getting the Tmobile AWS radio to work on the dev version would be my top interest
illestfob said:
getting the Tmobile AWS radio to work on the dev version would be my top interest
Click to expand...
Click to collapse
Don't hold your breath, I doubt this will work.
BenPope said:
Don't hold your breath, I doubt this will work.
Click to expand...
Click to collapse
its a slight crap shoot, but i live in a refarmed area so it should be liveable until LTE gets turned on.
I usually restrict my current phone (G2) to only edge anyway to conserve battery life
I think the problem with the HTC One X was the fact that it was Tegra and not Qualcomm - most of the major players in s-off work with Qualcomm chips. I remember when I had the One X about a year ago - rumour had it that the likes of revolutionary didn't want to work with Tegra hardware.
Things might be better for the One.
Out of interest did the One S get s-off?
Well with big devs getting it like Steve Kondik (CM) Koushik Dutta (CWM) etc I think the dev support will be strong on this one
ArmedandDangerous said:
Most HTC devices now are S-On (at least the recently released ones from 2011-2013). What they do have though is an unlocked bootloader. That means you can install a custom recovery like CWRM or TWRP, and you can flash kernels through Fastboot. S-Off gives the ability to flash kernels from within the recovery (Fastboot requires a USB cable and a computer) and also the ability to flash radios.
With the HoX (HTC One X, and all phones unlocked through HTCDEV), when you unlock your bootloader it will say UNLOCKED (as opposed to Locked when stock). Relocking the bootloader will say RE-LOCKED, but not LOCKED. This means HTC can see that you have unlocked the bootloader and they can, and depending on luck, wil reject your warranty claim.
With S-Off we can overwrite the HBOOT and downgrade to an older version where it still says LOCKED, send that back for warranty and all will be well
Click to expand...
Click to collapse
Thanks for the education man! I really think we can get this one done though because it's from Qualcomm as opposed to Tegra right?
Anyways, s-off is extremely important for warranty purposes I see Guess I should return my developer edition back right?
BenPope said:
Don't hold your breath, I doubt this will work.
Click to expand...
Click to collapse
Why is this? I actually bought the developer phone for the sole purpose of this working on TMobile network 1700 3G. I'm not refarmed to 1900 yet which means Edge speeds -_-. Gotta give us some hope! Lol
huwwatkins said:
I think the problem with the HTC One X was the fact that it was Tegra and not Qualcomm - most of the major players in s-off work with Qualcomm chips. I remember when I had the One X about a year ago - rumour had it that the likes of revolutionary didn't want to work with Tegra hardware.
Things might be better for the One.
Out of interest did the One S get s-off?
Click to expand...
Click to collapse
Good point! Qualcomm does seem fairly easy to hack with all the s3 and soon s4 out.
Sent from my SGH-T959 using xda app-developers app
ArmedandDangerous said:
Most HTC devices now are S-On (at least the recently released ones from 2011-2013). What they do have though is an unlocked bootloader. That means you can install a custom recovery like CWRM or TWRP, and you can flash kernels through Fastboot. S-Off gives the ability to flash kernels from within the recovery (Fastboot requires a USB cable and a computer) and also the ability to flash radios.
With the HoX (HTC One X, and all phones unlocked through HTCDEV), when you unlock your bootloader it will say UNLOCKED (as opposed to Locked when stock). Relocking the bootloader will say RE-LOCKED, but not LOCKED. This means HTC can see that you have unlocked the bootloader and they can, and depending on luck, wil reject your warranty claim.
With S-Off we can overwrite the HBOOT and downgrade to an older version where it still says LOCKED, send that back for warranty and all will be well
Click to expand...
Click to collapse
Dont need s-off for Radios or flashing kernels through recovery. There is a work around for all of that. We can change radios and flash kernels through recovery on this HTC One. The Renovate rom says the kernel is flashed with the rom install. You can install radios by installing radio to different partition then symlink to the new radio. Turge will be posting more about it soon. For now here is the thread where i tested this for him. http://forum.xda-developers.com/showthread.php?t=2243159 So we should be able to test the tmobile radio soon enough.
And yeah it's the tegra devices that are having the hardest time with s-off. The ATT One X (qualcom) THe DNA are both s-off. Since this is also qualcom, i have high hopes for s-off soon. Although it is not as important as it once was.
nugzo said:
Dont need s-off for Radios or flashing kernels through recovery. There is a work around for all of that. We can change radios and flash kernels through recovery on this HTC One. The Renovate rom says the kernel is flashed with the rom install. You can install radios by installing radio to different partition then symlink to the new radio. Turge will be posting more about it soon. For now here is the thread where i tested this for him. http://forum.xda-developers.com/showthread.php?t=2243159 So we should be able to test the tmobile radio soon enough.
And yeah it's the tegra devices that are having the hardest time with s-off. The ATT One X (qualcom) THe DNA are both s-off. Since this is also qualcom, i have high hopes for s-off soon. Although it is not as important as it once was.
Click to expand...
Click to collapse
I was mostly referring to the HoX, as mine is the Tegra one, and there is no workaround to flashing kernels or radios without ADB But yes I did read that on the One, it can be done through recovery although S-On. Would still love S-Off though for HBOOT downgrading
ArmedandDangerous said:
I was mostly referring to the HoX, as mine is the Tegra one, and there is no workaround to flashing kernels or radios without ADB But yes I did read that on the One, it can be done through recovery although S-On. Would still love S-Off though for HBOOT downgrading
Click to expand...
Click to collapse
Yes i totally agree. S-off is what we all want. Just not as important as it once was.. :fingers-crossed: we'll get it. I'd even make a bet that we have it in less than 60 days from now I did see somewhere that there is a suprcid method being worked on also.. That would be great as well :good:
nugzo said:
Yes i totally agree. S-off is what we all want. Just not as important as it once was.. :fingers-crossed: we'll get it. I'd even make a bet that we have it in less than 60 days from now I did see somewhere that there is a suprcid method being worked on also.. That would be great as well :good:
Click to expand...
Click to collapse
Just in time for me to wait out supply and batch issues from my telco, should start being available in early to mid May
First Android device I haven't rooted due to the Warranty issues with HTC ( How they are a right pain somtimes! ). Once S-OFF becomes available I will happily go ahead and unlock my boot loader etc. For now everything is fine without root
also would like super cid or S-off even better. to flash other region roms. INT RUUs etc . and we all know how ATT likes to software update HBOOT versions and no way to downgrade without S-OFF
nugzo said:
Dont need s-off for Radios or flashing kernels through recovery. There is a work around for all of that. We can change radios and flash kernels through recovery on this HTC One. The Renovate rom says the kernel is flashed with the rom install. You can install radios by installing radio to different partition then symlink to the new radio. Turge will be posting more about it soon. For now here is the thread where i tested this for him. http://forum.xda-developers.com/showthread.php?t=2243159 So we should be able to test the tmobile radio soon enough.
And yeah it's the tegra devices that are having the hardest time with s-off. The ATT One X (qualcom) THe DNA are both s-off. Since this is also qualcom, i have high hopes for s-off soon. Although it is not as important as it once was.
Click to expand...
Click to collapse
Ha! There is hope to flashing radios without S-OFF. I wonder if we can get a developer to try to get T-Mobile radios and flash them over to our Developer Edition phones. Meh, essentially they are ATT Htc Ones without restrictions
daddioj said:
also would like super cid or S-off even better. to flash other region roms. INT RUUs etc . and we all know how ATT likes to software update HBOOT versions and no way to downgrade without S-OFF
Click to expand...
Click to collapse
+1
BTW, I'm very curious what the cid is for the dev model.
Sent from my HTC One X+ using xda app-developers app
ArmedandDangerous said:
Interest? Sure. Able to do it? No idea. The HoX is still locked up tight. And for most people, S-Off would just mean easier to flash kernels, ability to flash radios and downgrade HBOOT so that it says LOCKED instead of RELOCKED for warranty purposes.
Click to expand...
Click to collapse
That's not exactly true. Downgrading hboot will still be relocked. There is a "lock status flag" that must be reset in order to become locked again.
S off does remove write protection on mmcblk0p3 where the lock flag lives,allowing the user to reset it and become locked again. User S_trace initially figured out what was going on and posted a flashable zip file. We have modded the zip(removed the device check) and i have threads in several forums,titled [how to]reset your lock status flag if you'd like a little more info/detail. The flag thus far has been the same in all s3 and all dual/quad core s4 devices.
The fact that the radio partition is currently writeable from recovery,is likely a fluke that will be "fixed" with newer hboots,so I'd advise those of you that like this feature to not update
Even tho the radio itself can be chanaged,other firmware cannot. Thus the newer radios may not be optimized with the older firmware remaining on the phone.(read: the new radios may not be working as good as you think they are)
My personal interest in s off is to change cid,and eliminate the security checks that prevent other carrier/regional ruus from flashing,and from going backwards in firmware. I also like to change the splash image
I cannot truly enjoy an s on device,and won't get one unless some means of s off becomes available.
Sent from my HTC PG09410 using xda app-developers app

Do not S-ON your edited HBOOT!

As there are more and more firmware coming, people will be installing them more and more... Same thing about people that wants to go back to stock. This thread could be considered useless and will make people say "yeah man, I knew it I'm not so stupid" that's OK! You're right.
I just wanted to remember that you shouldn't ever ever ever S-ON your HBOOT if it is edited by someone else! This will immediately brick your device, if you want to check do it. You need first to replace your current HBOOT with a stock one and then you'll be good to go.
@Sneakyghost:
* Before resetting Security to ON (S-ON) you MUST flash a stock/unchanged HBOOT! Your device will brick instantly if you set Security ON and reboot on a modified HBOOT!
Click to expand...
Click to collapse
In all the hboot threads it clearly states this
And it's not locking your bootloader that bricks it, it's s-on that does it
Sent from my HTC One using Tapatalk
superchilpil said:
In all the hboot threads it clearly states this
And it's not locking your bootloader that bricks it, it's s-on that does it
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I thought it was if you: fastboot oem writesecureflag -3 it will check if it's a modified hboot.
Sent from my HTC One using Tapatalk
I knew That simply locking the hboot would have bricked the device
Sent from my HTC One using XDA Premium 4 mobile app
@superchilpil you were right, I've edited the OP now and it should be ok now... :good:
matt95 said:
@superchilpil you were right, I've edited the OP now and it should be ok now... :good:
Click to expand...
Click to collapse
Wow, I think I've read about 20 threads so far about this, and this is the first time I've seen this corrected... Lots of threads always mentioned locking the bootloader as the issue if you don't have stock hboot.
I actually had a few questions about this,
1. Does the hboot version have to match that of the firmware ? ( 1.54 for 2.24.x.x for example ?) or does it simply have to be any stock hboot ?
2. Are there any differences between hboot for various carriers ?
3. I've read multiple times that running an RUU will not allow you to downgrade unless you have superCID, I don't understand this. I thought the RUU wouldn't run if the CID didn't match. From what I had understood previous to reading that is simply that an RUU cannot be used to downgrade the firmware or the hboot version, that can only be done manually with S-off
Thank you for your time and for the clarification!
ieldra said:
Wow, I think I've read about 20 threads so far about this, and this is the first time I've seen this corrected... Lots of threads always mentioned locking the bootloader as the issue if you don't have stock hboot.
I actually had a few questions about this,
1. Does the hboot version have to match that of the firmware ? ( 1.54 for 2.24.x.x for example ?) or does it simply have to be any stock hboot ?
2. Are there any differences between hboot for various carriers ?
3. I've read multiple times that running an RUU will not allow you to downgrade unless you have superCID, I don't understand this. I thought the RUU wouldn't run if the CID didn't match. From what I had understood previous to reading that is simply that an RUU cannot be used to downgrade the firmware or the hboot version, that can only be done manually with S-off
Thank you for your time and for the clarification!
Click to expand...
Click to collapse
1. Matching firmware/hboot is always the best route possible as it can minimize any issues that may arise, so I suggest it.
2.As far as compatibility issues there aren't any, the hardware on all these devices are almost exactly alike so running another hboot is quite possible. Although I suggest keeping to your carriers hboot to minimize issues. Or atleast keep a backup of yours
3.You can downgrade only if you are S-OFF, otherwise you can only upgrade or flash the corresponding firmware you're currently on. SuperCID only allows you to flash RUUs/firmware from other carriers or regions. CID stands for Carrier Identification. So even with supercid you can't downgrade, there are security measures in place to stop you from downgrading you hboot without s-off, it either won't write or you will end up with a brick.
Sent from my HTC One using Tapatalk

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