Sense->GPE partitioning? - One (M8) Q&A, Help & Troubleshooting

Hello there!
I saw a guide describing how to go from GPE to Sense with regards to the different partition sizes and I was wondering, since I've done the opposite (Sense->GPE) what would be the procedure for that route?
I wanted to go GPE because I find the amount of space available on my 16GB version unacceptable, only to find I had the same space available under GPE...
Thanks - and apologies if I missed a similar post, I did search, honest

Did you do the "full" conversion to GPE using the modified RUU? Or did you just flash a GPE ROM?
Your post is a little confusing. It sounds like you want to go back to Sense? But your post also states you say the guide to convert back to Sense, so I don't see the issue. Link which guide you are referring to.

redpoint73 said:
Did you do the "full" conversion to GPE using the modified RUU? Or did you just flash a GPE ROM?
It sounds like you want to go back to Sense? That is what the guide is for.
Click to expand...
Click to collapse
Sounds like I may have missed something? No, I didn't do the full conversion, I read that if you go to a custom GP ROM then you're ok with just flashing that...
No, I would like to stay GPE, but assumed I did do something wrong and intend to start from scratch...

krakout said:
No, I didn't do the full conversion, I read that if you go to a custom GP ROM then you're ok with just flashing that...
No, I would like to stay GPE, but assumed I did do something wrong and intend to start from scratch...
Click to expand...
Click to collapse
Ok, I think I understand what you are asking now.
Flashing a GPE ROM is sufficient if you just want to be on GPE version OS. But flashing a ROM is never going to affect your partitions.
If you want the GPE partitioning, you need to do the full conversion: http://forum.xda-developers.com/showthread.php?t=2708589
Note, the conversion will install North American radios, which may negatively affect your network reception. You should be able to flash your carrier/region specific radio to resolve this.
Also note that converting back to Sense requires some steps. The guide for AT&T is here (don't know if there is a guide more applicable to your version): http://forum.xda-developers.com/showthread.php?t=2721435

redpoint73 said:
Ok, I think I understand what you are asking now.
Flashing a GPE ROM is sufficient if you just want to be on GPE version OS. But flashing a ROM is never going to affect your partitions.
If you want the GPE partitioning, you need to do the full conversion: http://forum.xda-developers.com/showthread.php?t=2708589
Note, the conversion will install North American radios, which may negatively affect your network reception. You should be able to flash your carrier/region specific radio to resolve this.
Also note that converting back to Sense requires some steps. The guide for AT&T is here (don't know if there is a guide more applicable to your version): http://forum.xda-developers.com/showthread.php?t=2721435
Click to expand...
Click to collapse
Thanks for clearing that up for me!
One more question, if I may: what are, after all, the benefits of converting to full GPE? Some more space (how much?) and... what else?
Thanks again for your help

krakout said:
One more question, if I may: what are, after all, the benefits of converting to full GPE? Some more space (how much?) and... what else?
Click to expand...
Click to collapse
According to the following thread, I gather you can gain 1.8 GB of storage:
http://forum.xda-developers.com/showthread.php?t=2709710
Don't really know what else you gain. I believe GPE has its own hboot screen (looks different than Sense); and I'm not sure if you will get the GPE OTAs or not.

redpoint73 said:
According to the following thread, I gather you can gain 1.8 GB of storage:
http://forum.xda-developers.com/showthread.php?t=2709710
Don't really know what else you gain. I believe GPE has its own hboot screen (looks different than Sense); and I'm not sure if you will get the GPE OTAs or not.
Click to expand...
Click to collapse
Thanks very useful. 1.8GB is nothing to sneer at! Although I'm rather disappointed at how bloated the system is becoming...

krakout said:
Thanks very useful. 1.8GB is nothing to sneer at!
Click to expand...
Click to collapse
Completely agree, 1.8 GB is a good chunk of storage to regain. I knew the partitions were different, but wasn't actually aware until yesterday of the storage amount to be gained. Unfortunately, I actually like the Sense features, so I'm not personally interested in converting.
krakout said:
Although I'm rather disappointed at how bloated the system is becoming...
Click to expand...
Click to collapse
Yes, the stock ROMs from HTC are taking up more space in the past (especially on a 16 GB version, its not nearly so bad on the 32 GB). But they aren't alone, Samsung stock ROMs are rather large too, and IMO with a lot less functionality and also the infamous TouchWiz lag.
And of course, what one person considers bloat, another considers useful features and apps. Of course, HTC wants to add things that folks will find useful; but not everyone will agree.

As to your first point: I agree; I went with a GPE ROM because I've traditionally hated Sense, but didn't see much in terms of gains. I lost the amazing (AMAZING!) phone call sound quality, battery was worse and I even like the Sense 6 look... Let's see what happens once L is released (but I do use Nova instead of Blinkfeed...)
As to your second point: oh, Samsung probably has the worst software indeed. Sense is not bad, and indeed many people will want to use most of the stuff HTC has on offer, but I think that 6GB for System and another 4 or so GB out of the available space for the Sense apps is way too much. "Bloat" went more to the fact that they probably haven't optimized much of anything rather than the apps themselves... heck, at those sizes we're comparing Android with Windows (my Windows 7 installation is 12GB big if you ignore winsxs and the Installers)...

Related

Custom ROMs

When rooting and flashing custom roms, is there any roms which makes your phone work just the same way as it did before? I mean, does all the roms have support for camera(pictures and filming movies), sync (facebook, twitter, email), and so on?
Will I be able to use my phone as I did with the stock rom I guess the question is.
Getting more and more tempted...
aussieglis said:
When rooting and flashing custom roms, is there any roms which makes your phone work just the same way as it did before? I mean, does all the roms have support for camera(pictures and filming movies), sync (facebook, twitter, email), and so on?
Will I be able to use my phone as I did with the stock rom I guess the question is.
Getting more and more tempted...
Click to expand...
Click to collapse
yes of course, especially if you want to use back HTC sense, then flash the sense-based rom.
Android Revolution HD is recommended by me
The first answer I have... is you want exactly the same phone you have... keep your rom
Normally in most of the build thread the dev list what is working and what is not.
So read the first post you'll know.
Take also into account (and do it anyway) that you better backup your staff before testing any build. CWM give you the ability to backup everything. That's great for testing new builds.
General advice: never trust an electronic device!!!! Backup is the rule. One day or another you will loose your data (wrong manipulation, memory corruption...).
hedayat7 said:
yes of course, especially if you want to use back HTC sense, then flash the sense-based rom.
Android Revolution HD is recommended by me
Click to expand...
Click to collapse
I've read more about it now and found a genius guide in sweedish (I'm norwegian so that's pretty close, haha) and now I'm quite sure I will have to give RHD a go.
But what about the phone's language? All over I mean, in the menus and everything. Will I get a english phone after flashing custom ROM's, or can I just change the language settings ... ?
aussieglis said:
I've read more about it now and found a genius guide in sweedish (I'm norwegian so that's pretty close, haha) and now I'm quite sure I will have to give RHD a go.
But what about the phone's language? All over I mean, in the menus and everything. Will I get a english phone after flashing custom ROM's, or can I just change the language settings ... ?
Click to expand...
Click to collapse
Most (if not all) roms based on WWE stock roms have european languages. (At least swedish and norwegian)
peace!
The rom you were thinking of trying definitely has norwegian. Tried it a few days ago with swedish.
Great I can't sit on my hands anymore... *jumps into it* Wish me luck! I hope everything goes the way it's supposed to. I've used Visionary and Titanium Backup to freeze some apps, but that is as far as I've gone... But seems like that wasn't quite enough, if I can get more benefits out of the great phone, I want them
Will the facebook/gmail sync work with RHD? It doesnt say anything about it in the thread. What about the themes for the ROM? They wont override any language-settings or what?
Done! Now I will have to seriously clean up my SD card, as I did double backups of everything, including the stock rom, nandroid backup(?), app, system/settings backup in titanium backup. And I have to check if I will have to install a new radio.
I did. *installs new radio*

Simple ROM based on stock?

Is there a simple ROM based on stock (not ASOP) that removes bloatware from /system and makes more room? Something like Cataclysm, CleanCore, CleanROM from other devices?
Even better if it gets updates with each monthly security update and provides a simple upgrade path, rooted, etc.
Thanks!
CleanROM on extended hiatus.
The best I found was the CleanROM series from scolser, but he's had to but it down for a while, perhaps forever, due to family and personal health. I've really appreciated all he's done, given my share of donations and wish him all the best. (but I'll miss the great work he's done on the ROM)
Hope you all have a Merry Christmas.
Yeah, bummer. I hope he recovers and comes back.
Meanwhile I guess I can just remove some apps from /system to free up some space.
sirxdroid said:
Is there a simple ROM based on stock (not ASOP) that removes bloatware from /system and makes more room? Something like Cataclysm, CleanCore, CleanROM from other devices?
Even better if it gets updates with each monthly security update and provides a simple upgrade path, rooted, etc.
Thanks!
Click to expand...
Click to collapse
How about this one? http://forum.xda-developers.com/nexus-7-2013/development/rom-bad-boyz-nexus-7-stock-rooted-t3219148 There is a script you can run that'll clean up some of /system.
henderjr said:
How about this one? http://forum.xda-developers.com/nexus-7-2013/development/rom-bad-boyz-nexus-7-stock-rooted-t3219148 There is a script you can run that'll clean up some of /system.
Click to expand...
Click to collapse
Looks good, I'll give it a try.

Newbie Doubt

Hi guys, I have a HTC M8 AT&T (Actually version. Android: 5.0.2 | Software: 4.28.502.1) bought in the United States but use in Brazil, but it is not possible to automatically update and I always down by the site the latest version. I always wanted to modify the phone but was always afraid of not liking too. But now I'm trying to change and unlock it.
I have some doubts about the ROM.
- Everything works the same as the original?
- It will take some bug during use?
- Can I have the visual theme of the original?
- If I want to go back to the original, it is possible?
I apologize for the questions, but it is something I want to solve.
I read a lot here, see topics ROMS but always have some doubts, I see a lot of people talking about problems, etc.
Thank you all.
My responses below in red font:
diigodr said:
I have some doubts about the ROM. What ROM(s) are you considering? If you don't specify, it makes all your following questions too vague to possibly answer!
- Everything works the same as the original? Too vague to know what you are asking about. What specific features are you concerned about? The basic functionality (what you can do with the phone) will be the similar or same; but obviously there will be some differences, otherwise why install the ROM at all? In fact, many custom ROMs will be "better" than stock in many ways (which is the main point). For instance, performance tweaks, removed bloatware, and most will remove AT&T's limitation on being able to use WiFi hotspot (tethering).
- It will take some bug during use? Its possible to have bugs. But the official stock ROMs have bugs, too. ROMs based on HTC baseline ROMs (Sense or GPE) are typically very stable, and with very few bugs (are if any, they are very minor). More on "bugs" below.
- Can I have the visual theme of the original? It depend on what ROM you are talking about. It will typically state in the ROM threads if it has been themed, if it has tools built-in to change the theme, etc.
- If I want to go back to the original, it is possible? Of course. In fact, you can and should make a TWRP (custom recovery) backup of the stock ROM before you flash any custom ROMs, in case you want to revert to stock(as doing a TWRP backup makes it much easier to revert).
I read a lot here, see topics ROMS but always have some doubts, I see a lot of people talking about problems, etc. Again, too vague to know what you are referring to. Sometimes "bugs" are due to user error, such as having outdated firmware, not doing proper wipes before flashing, etc.
Whether to flash a custom ROM is a good idea for you as an individual, is a very personal choice. It depends on what you hope to obtain, which you really haven't mentioned at all. But custom ROMs are obviously worthwhile to a large number of folks. Otherwise, XDA wouldn't exist in the first place.
Click to expand...
Click to collapse

Do I need S-Off for this usage?

Hi everyone!
First of all, forgive me for all my noobish mistakes as I have never had a HTC branded phone.
I'm about to buy this phone for a quite decent price and use it as my main and daily driver so before paying I want to know some basic things beforehand.
My main point is to get the rom "ViperOne" working in the M9 with root as I want the best performance from stock HTC firmware and because I need their drivers to be as good as possible ( sound wise).
I have already read the entire OP on the thread rom of ViperOne and I haven't seen a word about S-on/off so I'm guessing that I will not have to mess around with that kind of security right?
So to sum up things, will I need S-Off for this?
-Custom Recovery (twrp)
-ViperOne rom with root.
-Maybe installing another kernel over ViperOne.
-Thermal (software) mod.
-Audio mods.
Thanks everyone by advance.
Just need to have an unlocked M9
S-off is for downgrade firmware, change CID/MID... (more risk to brick )
dirtyl0lharry said:
Hi everyone!
First of all, forgive me for all my noobish mistakes as I have never had a HTC branded phone.
I'm about to buy this phone for a quite decent price and use it as my main and daily driver so before paying I want to know some basic things beforehand.
My main point is to get the rom "ViperOne" working in the M9 with root as I want the best performance from stock HTC firmware and because I need their drivers to be as good as possible ( sound wise).
I have already read the entire OP on the thread rom of ViperOne and I haven't seen a word about S-on/off so I'm guessing that I will not have to mess around with that kind of security right?
So to sum up things, will I need S-Off for this?
-Custom Recovery (twrp)
-ViperOne rom with root.
-Maybe installing another kernel over ViperOne.
-Thermal (software) mod.
-Audio mods.
Thanks everyone by advance.
Click to expand...
Click to collapse
dirtyl0lharry said:
Hi everyone!
First of all, forgive me for all my noobish mistakes as I have never had a HTC branded phone.
I'm about to buy this phone for a quite decent price and use it as my main and daily driver so before paying I want to know some basic things beforehand.
My main point is to get the rom "ViperOne" working in the M9 with root as I want the best performance from stock HTC firmware and because I need their drivers to be as good as possible ( sound wise).
I have already read the entire OP on the thread rom of ViperOne and I haven't seen a word about S-on/off so I'm guessing that I will not have to mess around with that kind of security right?
So to sum up things, will I need S-Off for this?
-Custom Recovery (twrp)
-ViperOne rom with root.
-Maybe installing another kernel over ViperOne.
-Thermal (software) mod.
-Audio mods.
Thanks everyone by advance.
Click to expand...
Click to collapse
You don't need s-off but it is HIGHLY RECOMMENDED to do so if you're rooting the device and messing with roms. It gives that extra level of recovering the device should you cabbage it.
This but is a slight education into custom roms and why "I" believe you shouldn't do it on ANY device:
Custom roms/firmwares are built using "open source" code. Stock roms/firmwares are built using "proprietary" code. "proprietary" code is code that is specifically written for 'x' device by a team of software engineers using "proprietary" software and hardware specifically built for 'x' brand. For example, htc have their own stuff and samsung have theirs, so on and so forth. This makes the software "married/tailor made" to the hardware so it comes as optimised as it can possibly be while weighing in factors of carrier "bloatware". No-one wants to lose a customer because of a device that is inherently slow. No-one will buy a device that is inherently slow.
Then you have custom roms and firmware. Because proprietary code is private and not for the public domain, this "open source code" is more or less "trial and error" process to get all the features of a rom or firmware to run efficiently and effectively. This results in non optimised bad code, bugs, long processes, excess code and therefore "CAN" be slower than stock roms. Couple this with deodexed and it'll bog the device down in no time.
So as you can see, I don't really like custom roms or firmware just for the fact it is no faster or no better than the software that came with the device in the first place. It was designed specifically.
My advice is to leave the phone stock rooted and s-off if you MUST have them. Otherwise don't touch it at all and continue to get updates as they are released with no hassle!.
Beamed in by telepathy.
I need to correct some of the information that got posted previously in this thread.
First of all: There are only custom roms but no custom firmwares for HTC devices (c.f. the difference between rom and firmware).
Second: S-OFF increases the risk of a hard-brick dramatically since it removes security checks of the phone (c.f. this article, the 5th post/the first page of Sneakyghost's firmware thread and the article that I already linked above). S-ON phones will refuse to accept broken files (e.g. RUUs that got corrupted due to a bad download). A phone with S-OFF on the other hand will get flashed with such a broken file and you won't get notified with any error outputs. Another example are those NoRedText aboots which remove the read warning that appears during the boot if the bootloader got unlocked. You can only flash them with S-OFF but if the hex edits didn't get executed correctly this can actually lead to unrecoverable damages.
Don't get me wrong. I'm using a S-OFF phone, too. However, you need to be aware of the risks and that you don't need S-OFF for recovering a phone. Keeping a RUU at hand for your current firmware version (if one exists) or at least a TWRP backup of the stock rom is more than enough. Damages that can't get repaired with either a RUU or a backup can't get repaired with S-OFF, either, in most of the cases.
Third: You need to differentiate between stock rom based custom roms (e.g. ViperOne or ICE) and those custom roms that are developed from source (those are the roms that shivadow mentioned in his post - e.g. Lineage or Resurrection Remix).
Those roms that are based on the stock rom deliver the same perfomance (or maybe an almost not noticeable better/worse performance) than the stock rom does. There are no differences between the core of these roms and the stock rom. (On the other hands this means that bugs of the stock rom are present in these roms, as well.) Therefore the performance differences are minimalistic. However, you don't flash such roms due to their performance differences (in comparison with the stock rom) but due to the additional features that they provide on top of the stock rom experience.
Causes for disadvantages of the other group of custom roms already got explained by shivadow in his post. A perfect example is the bad perfomance of HTC's cameras (the hardware of the phones not the app) on CM/Lineage roms. Nevertheless, I've never seen an HTC phone being incredibly slower on a custom rom than it was on the stock rom. My One S for example is much snappier on Lineage 14.1 than it would be on its android 4.1.1 stock rom and its battery is lasting much longer (well, android 7 has way more battery optimizations than android 4.1.1 so that isn't such a surprise). The only thing that I can complain about is (as mentioned before) the picture quality of the camera.
In other words, it's not always black and white. The best advice that I can give is to test all roms that are available and to use that custom/stock rom that suits your needs best.
Fourth and last: The M9 is more than two years old. HTC normally doesn't support any phone longer than this time period. There probably won't be any more updates than the nougat updates for those SKUs that haven't received firmware 4.x, yet.
TL;DR: What got written in post #2.
I tried to generalise, thats why i mentioned custom firmwares AND roms as some devices have custom firmware, rather than custom roms. Some have both, some have none.
Absolutely right that s-off is a double edged sword that you don't really want to fall on so I highly recommend that it is best to keep the device as stock but if you must root it it's worth s-off. I've seen plenty of posts for devices being screwed regardless of s-off. Also don't you need s-off to be able to restore your system backup from twrp?.
THE only reason I rooted my phone is to block "intrusive" ads. I don't want ads on my homescreen, lockscreen or really anything but apps that are good enough to warrant being paid for their efforts. Now that there is an abundance of adblocking software that no longer requires root I have absolutely no reason to keep my phone modded. I'd flash back to stock but my luck says I'll f**k the phone beyond recognition. It'll probably burn my house down, crash my car and kill my dog too!.
Nowadays root isn't necessary if you're not a dev. Thats the point I'm trying to get across!.
Beamed in by telepathy.
shivadow said:
Also don't you need s-off to be able to restore your system backup from twrp?
Click to expand...
Click to collapse
No, you don't (and never did). It doesn't make any sense to S-OFF the phone just because you can if you don't need it for any of the purposes that are mentioned in the articles/posts that I linked in my last post. It only highers the risk of bricks due to what I wrote in my last post.
And there are other uses for custom roms/root aside from ad blocking but that would be an off-topic discussion in this thread.
Sent from my HTC One M9 using XDA Labs
@Flippy498 @shivadow thank you guys for all the links and the extra informations. I really appreciate it since there are things about HTC that I haven't seen on any other brands.
To get things clearer, since my Moto G XT1039 is getting old ( low performance and battery barely keeps up with the day) and I'm really into music and sound (spotify premium and lots of flacs) and a Fiio X7 android based mp4 is too expensive, I wanted to get a top sound-chip phone, actually, a phone with a top Digital to Analogic Converter.
Of course I do know that if I want to use all the power and features that the M9 makes for its sound, I need to be on stock firmware because of the drivers. I'm guessing that the audio behaves like the camera once using and AOSP based rom ( LOS, Slim, RRemix...) getting worse.
Thats why I want this phone, it basically is much more powerful than my Moto G SD400, it has way better camera, it has a 64bit SoC and official Nougat update and I'll end up with a great DAP on my pocket to use with Spotify.
As I said, I like to get everything as minimal as possible, I hate when the home screen is full of icons and widgets, I hate having lots of icons and indicatos on the status bar, I hate having all sensor toggled on ( gpu, nfc, bluetooth...), thats why I was looking for a stock rom that let me custom all the things to keep it as minimal as possible.
If you know any other updated, stock based rom, just let me know and link it to me as I'll disable as many things as I can to get extra battery on the phone. Yes, you can guess it, even on battery saving mode, the M9 would beat the hell out of the Moto G, so I'm giving up on everything but the sound, just to get more battery time.
I hope you can understand me now.

HTC 10 Oreo Battery --> SHOULD I ROOT?

Hello, I am new to XDA and I have an un rooted HTC 10 international unlocked model on software 3.16.401.2. My HTC used to have excellent battery before the Oreo update. I did multiple tests and checks to see what the issue could be and have ruled out rogue apps or hardware issues.
I have never rooted any of my phones before but I am desperate as the battery has tanked so badly
NOW TO THE POINT
I am looking for advice on:
1. If rooting my device and using a custom version of Oreo will actually improve battery issues. (Are there others who rooted for the reason I'm considering, if so did you actually notice an improvement?)
2. If so, what is the safest/most newbie friendly method of me doing this.
PLEASE NOTE: I am very satisfied otherwise with the standard features. I have switched between htc sense launcher and smart launcher but otherwise use the phone very conventionally. I am not opposed to different features but I essentially would like to have as close to what I have now without the battery issues.
(Sorry in advance if there are 100 similar threads I'm already very concerned I'll mess
this up and manage to brick my phone so I am just trying to get clear information in a thread that's not oversaturated and is written in a layman friendly (PLEASE ) way)
Thank you everyone!
SMSJA said:
Hello, I am new to XDA and I have an un rooted HTC 10 international unlocked model on software 3.16.401.2. My HTC used to have excellent battery before the Oreo update. I did multiple tests and checks to see what the issue could be and have ruled out rogue apps or hardware issues.
I have never rooted any of my phones before but I am desperate as the battery has tanked so badly
NOW TO THE POINT
I am looking for advice on:
1. If rooting my device and using a custom version of Oreo will actually improve battery issues. (Are there others who rooted for the reason I'm considering, if so did you actually notice an improvement?)
2. If so, what is the safest/most newbie friendly method of me doing this.
PLEASE NOTE: I am very satisfied otherwise with the standard features. I have switched between htc sense launcher and smart launcher but otherwise use the phone very conventionally. I am not opposed to different features but I essentially would like to have as close to what I have now without the battery issues.
(Sorry in advance if there are 100 similar threads I'm already very concerned I'll mess
this up and manage to brick my phone so I am just trying to get clear information in a thread that's not oversaturated and is written in a layman friendly (PLEASE ) way)
Thank you everyone!
Click to expand...
Click to collapse
1: No, routing your OS won't be the fix for your battery problems.
2: it's the way everybody had to do it, unlock the bootloader, flash TWRP with fastboot and flash a custom rom. It's all explained in the guides section.
Mr Hofs said:
1: No, routing your OS won't be the fix for your battery problems.
2: it's the way everybody had to do it, unlock the bootloader, flash TWRP with fastboot and flash a custom rom. It's all explained in the guides section.
Click to expand...
Click to collapse
Thanks for your response! I am currently doing more research now after reading your helpful comment ?. Would I still be able to use the phones default launcher (HTC sense in my case) after unlocking the bootloader and flashing a custom rom or will every part of the UI now be different?
Mr Hofs said:
1: No, routing your OS won't be the fix for your battery problems.
2: it's the way everybody had to do it, unlock the bootloader, flash TWRP with fastboot and flash a custom rom. It's all explained in the guides section.
Click to expand...
Click to collapse
What about gaining S-Off and reverting to Nougat and Nougat firmware? Seems with all the battery complaints that came along with the Oreo update, there is some validity in asking such a question.
SMSJA said:
Thanks for your response! I am currently doing more research now after reading your helpful comment ?. Would I still be able to use the phones default launcher (HTC sense in my case) after unlocking the bootloader and flashing a custom rom or will every part of the UI now be different?
Click to expand...
Click to collapse
Yes as long as you flash a sense based rom the UI will not change.
product26 said:
What about gaining S-Off and reverting to Nougat and Nougat firmware? Seems with all the battery complaints that came along with the Oreo update, there is some validity in asking such a question.
Click to expand...
Click to collapse
You can also downgrade without s-off but it's a bit trickier, there is a dedicated thread in the guides section that covered this. Have a look there for all info, there is also a video in that specific thread that shows how to do it.
https://forum.xda-developers.com/htc-10/how-to/downgrade-problems-downgrading-htc-10-t3735658/page48
But the basic question is also relevant, yes you can gain s-off and downgrade by flashing the firmware and then the ruu or a custom nougat rom.

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