[Q] Want to remove TWRP and unroot - Sprint HTC One (M8)

I apologize in advance if I should have posted this in a different area. Im not the best with that stuff.
As the title says, I want to remove TWRP and unroot my device. And yes I know there are many threads on this topic already, however none of them seem to actually get the job done. I have the Harmon Kardon edition for Sprint and I have been wanting to install this Lollipop update I got today.
So far, I have tried to use the RUU that a lot of tutorials seem to swear on, but when I start the process, it says that its not the correct version for my phone! (even though the tutorials say its for the harmon kardon eidtion)
Ive also used theUnlockrs tutorial and got stuck when there was no download for my CID number listed on the other xda developer post.
I then tried this tutorial and also couldnt find the correct files for my phone.
Heres what Im not understanding:
This isnt the first time I have rooted this device and unrooted it. I actually did this about 7 or 8 months ago and had no problem. Since then, I have removed all files and downloads that I used. SO WHY is everything wrong now? What am I doing wrong?
IF someone has the information I need to fix this problem, could you please help me? I just want lollipop!
Thank you,
sheer

Edit - wrong forum, and your problem is googleable.

Brakiss said:
Edit - wrong forum, and your problem is googleable.
Click to expand...
Click to collapse
yeah you say that, but apparently it isnt. Thats why I was looking for extra help..

Flash a stock rom.
Re-lock bootloader.
Flash stock recovery.
Take OTA.
Profit.
Side note it's not a good idea to wander outside the Sprint section because most threads refer to GSM devices.

One M8 Harman Karmon stock recovery
BD619 said:
Flash a stock rom.
Re-lock bootloader.
Flash stock recovery.
Take OTA.
Profit.
Side note it's not a good idea to wander outside the Sprint section because most threads refer to GSM devices.
Click to expand...
Click to collapse
Having issues finding the stock recovery file for the M8 H/K.
Want to install ViperOne m8 but need to update to 4.4.4 first.
Anybody has a link for the stock recovery?
I've downloaded the stock firmware and the recovery is in there but I don't which file is the recovery.
website: orums.androidcentral.com/htc-one-m8/390911-sprint-htc-one-m8-harman-kardon-edition-os-deleted-stuck-fastboot-loader dot html
Can somebody help?
Hardware version : 005
Software version : 2.16.654.4
Androir version : 4.4.3
HTC Sense version : 6.0
HTC SDK API Level : 6.25
Kernel Version : 3.4.0-gbf1c2ca [email protected] # 1 SMP PREEMPT
Baseband version : 1.08.20.06.12_4
Build number : 2.16.654.4 CL357420 release keys
PRI version : 2.62_003
PRL version : 55022
CID : SPCA_004

Related

[Q] Help me Flash my HTC ONE with Stock ROM or JB Upadted ROM !!!

Hi Members of XDA...
This is my 1st post here...
I have tried my best to find it what i want..but its too complicated to see different methods and opinions..
Ok the story goes like this ... >
Bought HTC-ONE... liked Amazing Device..
Rooted the device with TWRP...successfully... But when the Jelly Bean update was released i was stuck because after downloading the 400 MB file, the phone would just restart and will go to the TWRP which gives me nothing when trying to update the JB file.
Also FYI, i have unrooted or relocked the device again for the updating process..
Ok first of all i am new to Android world... Dont know much of the technical terms... but less than a few.
So my questions are :-
1- How can i find my phones Model ID / MID or CID / Cidnum ID ??
2- How can i identify what set or version of ROM package is compatible for my HTC-ONE ???
3- Whats this RADIO ?
4- Whats S-On and S-Off... [Just read its Security on and off]. But should i need it ?
5- Whats this Odexed and De-Odexed ? And what my HTC-ONE has currently as stock ROM odexed or de-odexed ?
6-Will i get an .exe JB update for my HTC-ONE after identifying what version of ROMs i need ?
7-Where can i download the Revolution HD ROM ???
7-Finally , How can i flash any ROM to my HTC-ONE... with out hassle... [tried with HTC Tool Kits Update RUU option, but shows error cant load "xxxxx" ]
I know its a lot of questions.......... But Please Help Me ..
Waiting for all your experts replies ....
First time Android user myself, been reading for the last week and I've learned quite a bit though. All info can be found in XDA forums if you use search feature.
1- How can i find my phones Model ID / MID or CID / Cidnum ID ??
download Android SDK (adb/fastboot) and with the device connected in fastboot mode, type fastboot getvar all. It will tell you the versions of everything.
2- How can i identify what set or version of ROM package is compatible for my HTC-ONE ???
All ROM's say which device they are compatible with. I think all except for Sprint (in USA) are the same. The best way would be to use the HTC ONE _carrier_ forum and click on Android Development under there
3- Whats this RADIO ?
RADIO is the Antennae firmware used by your device for wifi/bluetooth/signal
4- Whats S-On and S-Off... [Just read its Security on and off]. But should i need it ?
Dont worry about this, this is one step further than ROOT. It grants you access to even more things like changing your CID/Model number so you get OTA updates designed for another carrier.
5- Whats this Odexed and De-Odexed ? And what my HTC-ONE has currently as stock ROM odexed or de-odexed ?
I forgot exactly what it was, I found the explanation in google.com basically deodexed lets you install some things odexed does not use google for this.
6-Will i get an .exe JB update for my HTC-ONE after identifying what version of ROMs i need ?
7-Where can i download the Revolution HD ROM ???
There are two versions, one based on Sense 5 and one on Google Edition:
http://forum.xda-developers.com/showthread.php?t=2183023
http://forum.xda-developers.com/showthread.php?t=2356654
step by step instructions can be found there, that is how I learned myself.
7-Finally , How can i flash any ROM to my HTC-ONE... with out hassle... [tried with HTC Tool Kits Update RUU option, but shows error cant load "xxxxx" ]
follow the steps posted on the ROM thread of your choice. I've read some ROMs require two steps (one flash ROM one flash boot image) but ARHD 12.2 does not, it is easy to install. There is a video in youtube that shows some guy installing ARHD 12.0 which is the same process.
Thanks to the above replier, you got thr answers you need, but most people wouldn't be bothered to answer so many questions. You need to search for these answers - it doesn't matter how new you are. This is my first HTC, that makes me new to most of the above questions. However I know all the answers due to common sense!

[Q] 4.3 Update Questions

Hi all,
I'm currently on 1.31.651.2 (Android 4.1.2) and just started getting the notifications to update to 3.04.651.2 (Android 4.3). I'm currently Unlocked but with S-On, with TWRP installed. The Stock ROM is rooted for my convenience.
What is the best course of action to get to 4.3? I know I can't OTA without putting Stock Recovery on and I'd like to avoid doing that right now.
From what I'm reading and seeing there is a Rooted 4.3 Odex/DeOdex ROM, but I'm wary from people saying it hasn't worked 100% right. I also am reading that I should do S-Off before doing it (for the radios?).
So what should I do? I'd really like to get onto 4.3 and I'm not certain of the upgrade path at this point. Any help or advice will be greatly appreciated!
MASantangelo said:
Hi all,
I'm currently on 1.31.651.2 (Android 4.1.2) and just started getting the notifications to update to 3.04.651.2 (Android 4.3). I'm currently Unlocked but with S-On, with TWRP installed. The Stock ROM is rooted for my convenience.
What is the best course of action to get to 4.3? I know I can't OTA without putting Stock Recovery on and I'd like to avoid doing that right now.
From what I'm reading and seeing there is a Rooted 4.3 Odex/DeOdex ROM, but I'm wary from people saying it hasn't worked 100% right. I also am reading that I should do S-Off before doing it (for the radios?).
So what should I do? I'd really like to get onto 4.3 and I'm not certain of the upgrade path at this point. Any help or advice will be greatly appreciated!
Click to expand...
Click to collapse
You don't necessarily need to update your firmware, nor your radio to update to 4.3
Right now there are 3 android 4.3 ROMs which are buggless.
http://forum.xda-developers.com/showthread.php?t=2301672
http://forum.xda-developers.com/showthread.php?t=2470693
http://forum.xda-developers.com/showthread.php?t=2473941
Flashing firmware and radio is OPTIONAL, your phone will work fine even without them
IF you want you can flash only the radio(no need s-off) http://www.androidfilehost.com/?fid=23159073880933335
IF you want to flash the firmware you need to be s-off first. The new firmware contains a new touch driver, so before flashing it you'll need to update TWRP to the latest (2.6.3.0) if you haven't already. The firmware can be found here http://www.androidfilehost.com/?fid=23159073880933456
Note if you update your firmware touch won't work if you install a 4.1.2 ROM, it works only on 4.3 ROMs
elvisypi said:
You don't necessarily need to update your firmware, nor your radio to update to 4.3
Right now there are 3 android 4.3 ROMs which are buggless.
http://forum.xda-developers.com/showthread.php?t=2301672
http://forum.xda-developers.com/showthread.php?t=2470693
http://forum.xda-developers.com/showthread.php?t=2473941
Flashing firmware and radio is OPTIONAL, your phone will work fine even without them
IF you want you can flash only the radio(no need s-off) http://www.androidfilehost.com/?fid=23159073880933335
IF you want to flash the firmware you need to be s-off first. The new firmware contains a new touch driver, so before flashing it you'll need to update TWRP to the latest (2.6.3.0) if you haven't already. The firmware can be found here http://www.androidfilehost.com/?fid=23159073880933456
Note if you update your firmware touch won't work if you install a 4.1.2 ROM, it works only on 4.3 ROMs
Click to expand...
Click to collapse
Thanks for the clarification. I wasn't sure what the firmware files were for. I was looking at the stuff in the thread: http://forum.xda-developers.com/showthread.php?t=2467607
I really want to keep a stock rom, and that's stock + root. Since I think I want to flash the firmware file (new drivers yay!) I'll need to do S-Off first. That's exactly the info I needed. I already have TWRP 2.6.3.0 (that's the one part I saw that I could understand and I always like to run the latest anyways).
Really appreciated. Thanked.
Sorry to piggy back, but how can we make sure we are on the new firmware or not? I flashed it but I remember seeing an error in the CMD window and want to make sure it went through ok.
Vic_Vinegar said:
Sorry to piggy back, but how can we make sure we are on the new firmware or not? I flashed it but I remember seeing an error in the CMD window and want to make sure it went through ok.
Click to expand...
Click to collapse
PRI 4.38_003
Baseband 1.00.20.0913_3
bigdaddy619 said:
PRI 4.38_003
Baseband 1.00.20.0913_3
Click to expand...
Click to collapse
Thanks man. Looks like it didnt work. Going to try it again, flashing the firmware also has the updated radios correct? Or do I need to do both?
bigdaddy619 said:
PRI 4.38_003
Baseband 1.00.20.0913_3
Click to expand...
Click to collapse
Hmmm I've got that baseband but my pri is 3.17_003
Sent from my HTCONE using Tapatalk 4
For those interested, here's the path I took in full:
1) Installed TWRP 2.3.6 while on old (rooted) stock.
2) Obtained S-Off using revone including getting rid of the tampered flag. ( http://forum.xda-developers.com/showthread.php?t=2314582 )
3) Installed Full firmware from O.M.J. ( http://forum.xda-developers.com/showthread.php?t=2467607 )
4) Installed Rooted Stock from same URL as Step 3.
5) Reinstalled TWRP 2.3.6 from the TWRP website using fastboot commands.
6) Flashed SuperSU 1.65 from the kit ( http://forum.xda-developers.com/showthread.php?t=2244060 )
I now have 4.3 rooted Stock with the latest firmware.
Thanks to all who commented, but especially elvisypi. I was reading through the O.M.J. thread and saw you answered a lot of my questions in there. My bad for not reading before going and posting. Thanks regardless.

[Q] Update from really old Viperone version 1.1

I have read and read and cannot find a straight answer so I apologize for the new thread. I loaded the latest version of Viperone 1.1 back when I first got my phone. I did not root the phone through the Sprint official method if that makes a difference. Its been a REALLY long time since I loaded the ROM so I have a few questions.
1) I just noticed the ViperOne 5.8 has been released. Is this version and the 1.1 version related? I mean, did the 1.1 version officially get updated over time to the 5.8 version? The reason I ask is that I kept on going into Goo manager on my phone and it kept telling me there were no updates for my ROM. But then I log on here and see 5.8. Hate that I missed out on all the upgrade goodness.
2) What do I need to do to get to 5.8? I have updated my TWRP recovery to 2.6.3 as I read that was a requirement. I've also read to upgrade the firmware. What is that? I thought that was updated when I loaded the ROM, but I may be wrong. I just want to make sure I have the phone properly prepped before loading the 5.8 ROM.
3) Speaking of the 5.8 ROM, I have a Sprint phone (CDMA). I cannot find the Sprint version of the 5.8 CDMA ROM. The Sprint HTC One ViperOne thread directs me to the standard HTC One ViperOne thread for ROM download. Is the ROM the same for CDMA and GSM nowadays. I seem to remember them being different back when I did this originally.
4) What will happen to my pictures and text messages and such? Ihave backed them up through HTC Sync just in case, but it would be nice to not have to reload everything.
I had this figured out at one time, but its been so long, I'm now lost. Thanks in advance for your replies.
You need to search to find how to upgrade your firmware if that is suggested for the update. After that download the Rom you want and follow the instructions from that thread to flash it. your pictures will stay as long as you do not wipe that part in recovery. Your game data and such will be wiped for a clean install but you can back that up with third party apps such as titanium backup our others.
Sent from my HTC One Max using Tapatalk!
1) Same team different developer
2) Sounds like you firmware may be pretty old
The firmware thread is HERE Follow the instructions in the thread.
You will ned the latest radio/baseband it can be found HERE Flash in recovery.
Firmware is not included in any rom.
3) ViperOne has multi carrier support meaning it works on both GSM and CDMA (it will know which version to flash for you) you are correct GSM and CDMA roms are different...some devs support Sprint so read the OP to make sure there is Sprint support.
4) If you are s-on you'll have to re-lock your bootloader to be able to either update the firmware...meaning you will have to unlock again which will wipe your device.
gimmeitorilltell said:
You need to search to find how to upgrade your firmware if that is suggested for the update. After that download the Rom you want and follow the instructions from that thread to flash it. your pictures will stay as long as you do not wipe that part in recovery. Your game data and such will be wiped for a clean install but you can back that up with third party apps such as titanium backup our others.
Sent from my HTC One Max using Tapatalk!
Click to expand...
Click to collapse
So, I've done all that, but I am not understanding what "firmware" is. Is that the Android version, like 4.1.2 or 4.4.2? If so, I thought the ROM included the firmware since they all reference it being a KitKat based ROM or Jelly Bean ROM.
I've also looked for my ROM, but the only ROM I can find is not in the Sprint thread. Its in the non-Sprint thread. So is there not a Sprint(CDMA) and GSM ROM versions anymore? They used to be separate ROMs when I did this a while back. Are they the same ROM nowadays?
BD619 said:
1) Same team different developer
2) Sounds like you firmware may be pretty old
The firmware thread is HERE Follow the instructions in the thread.
You will ned the latest radio/baseband it can be found HERE Flash in recovery.
Firmware is not included in any rom.
3) ViperOne has multi carrier support meaning it works on both GSM and CDMA (it will know which version to flash for you) you are correct GSM and CDMA roms are different...some devs support Sprint so read the OP to make sure there is Sprint support.
4) If you are s-on you'll have to re-lock your bootloader to be able to either update the firmware...meaning you will have to unlock again which will wipe your device.
Click to expand...
Click to collapse
Thanks for the links. I meant to upload this screenshot to help. Don't laugh. I know its REALLY old.
blowe said:
So, I've done all that, but I am not understanding what "firmware" is. Is that the Android version, like 4.1.2 or 4.4.2? If so, I thought the ROM included the firmware since they all reference it being a KitKat based ROM or Jelly Bean ROM.
I've also looked for my ROM, but the only ROM I can find is not in the Sprint thread. Its in the non-Sprint thread. So is there not a Sprint(CDMA) and GSM ROM versions anymore? They used to be separate ROMs when I did this a while back. Are they the same ROM nowadays?
Click to expand...
Click to collapse
BD619 answered you pretty well here. But firmware is not the Rom, that is software. As stated above the m7 has been commonized and the flashable roms have a script built in to figure out if it is gsm or cdma but not every rom is like this. Sprint is really out there on their own, in a way, and not as compatible with other m7 variants. Just read plenty and make sure you KNOW what you're flashing before you flash it.
Sent from my HTC One Max using Tapatalk!
BD619 said:
1) Same team different developer
2) Sounds like you firmware may be pretty old
The firmware thread is HERE Follow the instructions in the thread.
You will ned the latest radio/baseband it can be found HERE Flash in recovery.
Firmware is not included in any rom.
3) ViperOne has multi carrier support meaning it works on both GSM and CDMA (it will know which version to flash for you) you are correct GSM and CDMA roms are different...some devs support Sprint so read the OP to make sure there is Sprint support.
4) If you are s-on you'll have to re-lock your bootloader to be able to either update the firmware...meaning you will have to unlock again which will wipe your device.
Click to expand...
Click to collapse
I am currently S-Off, so hopefully I don't have to worry about #4.
For #3, there is a dedicated Sprint ViperOne thread, so I believe they support Sprint, but that thread directs me to the non_sprint ViperOne thread for ROM download. I figured the ROM was the same now, but wanted someone to explicitly confirm that. Thank you for clearing that up.
blowe said:
I am currently S-Off, so hopefully I don't have to worry about #4.
For #3, there is a dedicated Sprint ViperOne thread, so I believe they support Sprint, but that thread directs me to the non_sprint ViperOne thread for ROM download. I figured the ROM was the same now, but wanted someone to explicitly confirm that. Thank you for clearing that up.
Click to expand...
Click to collapse
If you are s-off no need to re-lock
The 5.8 rom in the main viper thread is the one you want it is able to tell you are on a Sprint device and will flash the correct files.
OK, I've tried to update to the firmware that was linked, but if failed with ...
ERROR [155]: UNKNOWN ERROR
The ROM Update Utility cannot update your Android phone.
Please get the correct ROM Update Utility and try again.
I am at hboot 1.44 at the moment. The firmware link stated that I need to update to 1.56. How do I update to 1.56 and keep s-off?
blowe said:
OK, I've tried to update to the firmware that was linked, but if failed with ...
ERROR [155]: UNKNOWN ERROR
The ROM Update Utility cannot update your Android phone.
Please get the correct ROM Update Utility and try again.
I am at hboot 1.44 at the moment. The firmware link stated that I need to update to 1.56. How do I update to 1.56 and keep s-off?
Click to expand...
Click to collapse
Flash the full firmware then you can flash the RUU

Just got this phone

Hello!
I just bought this phone. I have the HTC One HKE. I bought yesterday, and today I rooted it. I had no reason to wait.
So I was wondering, currently I'm on the Viper ROM 2.4.0, and I thought it would increase the performance but it has rather slightly hampered it. I want one that will increase the performance of the phone, so which ROM would you recommend? Also, please do make a kernel recommendation that goes along with it, too.
I prefer staying with Sense 6.0.
Not sure how you "slightly hampered" the performance of your phone by flashing Viper, other than the fact the version of Viper you flashed is outdated. I'm running Viper 3.2.1 with MassStash's Hypernova kernel and my phone runs great. To each his own, though. "Best ROM/kernel" threads are subjective at best because what works well for one person may not work well for another.
Magnum_Enforcer said:
Not sure how you "slightly hampered" the performance of your phone by flashing Viper, other than the fact the version of Viper you flashed is outdated. I'm running Viper 3.2.1 with MassStash's Hypernova kernel and my phone runs great. To each his own, though. "Best ROM/kernel" threads are subjective at best because what works well for one person may not work well for another.
Click to expand...
Click to collapse
I'm very well aware that this my rom is outdated, but I cannot seem to be able to return to stock to update the firmware in order to install the latest versions. When I do, my WiFi does not work and that's a real problem.
Can anyone direct me to the correct thread that explains how I can do this? Note that I have tried updating the firmware in many different ways - through the command prompt, and using the generic RUU update with replacing the rom.zip file. I do not know what I need to do first, I just relocked the device and had a little panic attack because I couldn't do anything else. I had to unlock it again using the HTC dev code.
Can somebody please tell me what I need to do to get the latest firmware? I'm on the HK device with firmware version 2.16.654.4
Take a look at the thread linked below:
http://forum.xda-developers.com/showthread.php?t=2729173
I tried to do this, as I previously stated. I tried to do it over fastboot. I tried using Generic RUU. Each time I get an error. At first it was error 99, but then I relocked the bootloader and got error 12 (signature verification failed).
Would you mind posting a link to the RUU you attempted to use? We were actually having a discussion in another thread about some similar issues folks were having.
I tried them all.
I tried the HK version, the non-HK version. I tried the ones with boot.img and the ones without. I even tried to download the entire image (1.6GB) and flash it with the program and that did not work either. I tried them all, believe me. I would not let something like that (wrong version) get in the way.
I have:
cidnum: SPCS_004
version-main: 2.16.654.4
I even tried running the SuperCID command, and that didn't do anything.
You won't be able to get SuperCID while S-on. My suggestion at this point would be to unlock your bootloader again, flash a stock rooted ROM and then get S-off with the Sunshine exploit. You can then update your firmware without having to mess with any of the RUU or FUU stuff.
Where could I find a stack rooted ROM that matches my version?
I looked them all up in the other thread and most of their versions are 1.xxx while my mainver is 2.16.xx
Amer28 said:
Where could I find a stack rooted ROM that matches my version?
I looked them all up in the other thread and most of their versions are 1.xxx while my mainver is 2.16.xx
Click to expand...
Click to collapse
Post #3 under "Old Downloads":
http://themikmik.com/showthread.php?16276-SPRINT-ROM-BeyondStockᵀᴹ-v1-2-0-amp-Stock-Rooted
Okay. Right now, I am on stock rooted. I am not quite sure how to proceed with the update. I have been going to the menu, and checking for an update but it says that no update is availible at this time.
Do I try running the RUU, or just wait for it to arrive?
I should also tell you that I am still on TWRP and unlocked. Should relock and install stock recovery as well?
Amer28 said:
Okay. Right now, I am on stock rooted. I am not quite sure how to proceed with the update. I have been going to the menu, and checking for an update but it says that no update is availible at this time.
Do I try running the RUU, or just wait for it to arrive?
I should also tell you that I am still on TWRP and unlocked. Should relock and install stock recovery as well?
Click to expand...
Click to collapse
You can go one of two routes. Either S-off and manually update your firmware, or install the stock Android system recovery, which will allow you to take the update.
So, I did it.
I'm currently on the latest firmware, running the latest Venom too with the WiFi working. I have root access.
You told me earlier that I should do sunshine s-off. I was wondering, why is that? I already have everything I wanted. What is the benefit of S-OFF, when I already have root?
I don't want to sound ignorant, but I really don't know. I feel like a big noob right now.
Amer28 said:
So, I did it.
I'm currently on the latest firmware, running the latest Venom too with the WiFi working. I have root access.
You told me earlier that I should do sunshine s-off. I was wondering, why is that? I already have everything I wanted. What is the benefit of S-OFF, when I already have root?
I don't want to sound ignorant, but I really don't know. I feel like a big noob right now.
Click to expand...
Click to collapse
Read this:
http://forum.xda-developers.com/showthread.php?t=1680928

[Q] Trying to update firmware, but no version-main!

Hi guys,
I'm trying to update Android HD Revolution for M8 (unlocked, intl version, soff, supercid). Wifi wasnt working, and read that I need to upgrade to the latest firmware (I at first thought firmware was included with custom roms .. i appear to be wrong)
Which firmware to I download? I am looking here:
xda7.androidrevolution.org/db_mirror/Firmware/index.php?dir=HTC%2FHTC_One_M8%2F
and there's tons! I fastboot getvar all and main-var is blank !
(screenshot attached)
Which one do I download?
Bonus question: Should I update root, or once it's already rooted, it can update itself?
Thanks guys. I'm OK at this stuff but no where near an expert.
thatguy724 said:
Hi guys,
I'm trying to update Android HD Revolution for M8 (unlocked, intl version, soff, supercid). Wifi wasnt working, and read that I need to upgrade to the latest firmware (I at first thought firmware was included with custom roms .. i appear to be wrong)
Which firmware to I download? I am looking here:
xda7.androidrevolution.org/db_mirror/Firmware/index.php?dir=HTC%2FHTC_One_M8%2F
and there's tons! I fastboot getvar all and main-var is blank !
(screenshot attached)
Which one do I download?
Bonus question: Should I update root, or once it's already rooted, it can update itself?
Thanks guys. I'm OK at this stuff but no where near an expert.
Click to expand...
Click to collapse
Well first off, you're in the wrong section, this is HTC One M7, the HTC One M8 is here: http://forum.xda-developers.com/htc-one-m8
2nd, the missing version-main, is due to a bug in some TWRP versions, but hboot 3.16 would indicate you are still on a 1.xx firmware
there are several guides/collections in the M8 forums for firmware updates (i'm not going to post links here, so as not to confuse M8 vs M7), you should check vomer's, sneakyghost's (and several others) collections in the M8 section
some of the firmwares are "combined ones" (means they include all previous updates), others are incremental, so when in doubt, flash the firmwares incrementally
(on a side note, i used sneakyghost's 3.28.401.9 combined nowipe zip, and went from 1.54.401.10 straight to 3.28.401.9)

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