Develop Bugs

[Q] How to downgrade HTC One M8 Euro 5.0.1 GPE to Stock Kitkat

Hi,
I'm looking for a bit of guidance as I have never downgraded a phones OS and don't want to balls this up.
I had a stock HTC One M8 bought from Amazon UK running kitkat 4.4.4. I became impatient and decided to upgrade the ROM to Lollipop 5.0.1 GPE to test out the new OS. After a couple of months use and with the news that the official HTC OTA update is nearly available I want to jump back to stock as I miss Sense. I foolishly didn't make any backup's before I upgraded which I now know is a big mistake.
These are the steps I took to root the phone.
I unlocked the boot-loader using the HTC web page instructions
I used sunshine to s-off the phone
before wiping cache and installing the HTC M8 GPE 5.0.1 ROM using HTC One 2014 (M8) AIO Toolkit by Hasson2000 v2.0
Here is my current phone status
*** Software Status Modified ***
M8_UL PVT SHIP S-OFF
CID-HTC__001
HBoot-3.19.0.0000
Radio-1.22.21331147A1.29G
OpenDSP-v46.2.2-00564-M8974_FO.0811
OS-
eMMc-boot 2048MB
Oct 27 2014,18:44:38.0
I would be grateful if anyone could lend any assistance in helping me revert back to Kitkat.
Regards,
Dan

Read here
http://forum.xda-developers.com/showthread.php?t=2701376
It's all written out there

Thanks for info Mr Hofs,
This is a really nice resource and will be very helpful.
Dan

Mr Hofs said:
Read here
http://forum.xda-developers.com/showthread.php?t=2701376
It's all written out there
Click to expand...
Click to collapse
everyone says same thing we know it's all written there but which ruu or which firmware we should install .i tried 1.54 2.22 4.16 everything on this post but i couldnt go back . my phone unlocked and s-off with rooted. but i installed 1.54 ruu last night and my phone opened 5.01 again. what should i do i really want to know.
should i install previous hboot to my phone ? like 1.44 ? if i install my s-off will turn on ? (i dont want to turn on) if i install hboot 1.44 and install 1.54 ruu can i go kitkat? i really need the kitkat.
my os is 4.16 by the way. its written in bootloader.

Try this... http://forum.xda-developers.com/showthread.php?t=2733523
Me personally, the only way I have found to revert quickly is to get a copy of ViperRom, store it on the external SD, flash TWRP, and flash the rom. After that I just run a RUU and it's all good. I am on GPE 5.1 right now and will be going back to KK Dev Edition tonight. I hate Lollipop.

Is this process workable to from AT&T to DEV version of M8?

So I was browsing the HTC website and came upon this webpage with various ROMs for the HTC m8 and others:
http://www.htc.com/us/support/rom-downloads.html#unlocked
I have an AT&T Unlocked Bootloader and rooted M8 but it's still S-ON.
Can I basically change the CID to the DEV version and then flash this rom/RUU over the M8 to get the developer version?
http://www.htc.com/us/support/htc-one-m8/news/

You need S-OFF to change your CID. So that is your first goal here.
And Sunshine is your only chance to s-off. ?

Thanks Darth,
Did exactly that...sunshine to s-off, changed the cid to supercid and flashed the Dev Edition RUU to get what I wanted. I noticed that you can't use fastboot boot recovery.img with that RUU but I flashed a custom recovery and then back to stock and everything is great now.

Unrooting T-Mobile M8 Questions

Hey guys, I know there's a crazy amount of unrooting threads here and everywhere else on the internet, but the more I search the more confused I get. So here's my short situation and my few questions:
Got a T-mobile M8, rooted, S-On, Unlocked, Running S.ROM. I'm trying to do the Tmobile JUMP thing to get the new HTC 10, so I'm trying to unroot this as much as possible. I've found at least 7 different ways with different outcomes on how to do this, so here are my questions:
-I keep reading you can just flash the RUU with no other prerequisites and it'll take your phone back to stock (except for the "Relocked" status). Is this true?
-Follow up to previous question: has anyone had any experience with returning a Relocked phone to Tmobile for their JUMP plan? (Not warranty exchange, I feel they're more strict with that)
-Is the only way to change the Relocked status to Locked by going S-Off with Sunshine and doing all of the 8923479324 steps in order to erase all of the tampered flags?
-What is the BEST method with the BEST outcome to go back to full stock on the M8?
Thanks in advance!

TehAsher said:
-I keep reading you can just flash the RUU with no other prerequisites and it'll take your phone back to stock (except for the "Relocked" status). Is this true?
Click to expand...
Click to collapse
The statement "no other prerequisites" is not specific enough. If you mean stock ROM and/or stock recovery (which folks sometimes think is needed to RUU), its true that neither are needed in order to RUU.
There are however some prerequisites:
1) PC required. Win7 and USB 2.0 for the best compatibility with RUU.
2) RUU needs to be intended for your version (CID and MID)
3) RUU version needs to be greater or equal to main version on the phone (this requirement is bypassed with s-off)
4) Relocked or locked bootloaded (this requirement also bypassed with s-off)
TehAsher said:
-Is the only way to change the Relocked status to Locked by going S-Off with Sunshine and doing all of the 8923479324 steps in order to erase all of the tampered flags?
Click to expand...
Click to collapse
Correct.
TehAsher said:
-What is the BEST method with the BEST outcome to go back to full stock on the M8?
Click to expand...
Click to collapse
T-Mob is not my carrier, and I know nothing of their Jump program. But in most cases, the best bet with returning a phone is to RUU to stock, and make the bootloader LOCKED. Return to s-on (after s-off) is probably not needed.

Thanks for the info! I guess I'll be getting sunshine then and try to follow all of these guides. So if I S-off with sunshine, as long as I check my CID and MID (I got the RUU from the HTC website, but I'll double check it anyways), I can flash that and return to stock. And afterwards I can find a guide on how to reset the tampered flags and the Locked status?

TehAsher said:
And afterwards I can find a guide on how to reset the tampered flags and the Locked status?
Click to expand...
Click to collapse
Yes, that is what I would suggest. Guide on how to make it LOCKED and remove TAMPERED:
http://forum.xda-developers.com/showthread.php?t=2708571

How I went back to stock
I was rooted and running custom ROMS, but when MM came out I wanted to make sure that my firmware/radio was updated. So for me this is what I did
- first I am s-on
- When I unlocked the bootloader, just before I installed TWRP, I made a copy of the recovery. Also I backed up my stock ROM. Both I kept
So to restore:
- I re-installed via TWRP, the stock ROM, and made sure that I didn't root it
- I re-installed the stock recovery
- rebooted and phone saw the MM upgrade and proceeded to upgrade.
If you don't have the recovery/stock ROM you will need to remember what version of android you were on when you overwrote the recovery with TWRP. If your firmware + recovery + OS do not match the update won't work.
-brad

redpoint73 said:
Yes, that is what I would suggest. Guide on how to make it LOCKED and remove TAMPERED:
http://forum.xda-developers.com/showthread.php?t=2708571
Click to expand...
Click to collapse
Awesome, got my phone S-Off. I tried installing the RUU from the HTC website but I got an error and it failed, saying something about I'm using the wrong RUU. This is my CID and MID:
MID: 0P6B13000
CID: T-MOB010
I used this link to get my RUU:
http://www.htc.com/us/support/rom-downloads.html#tmobile
Am I doing something wrong?

TehAsher said:
I tried installing the RUU from the HTC website but I got an error and it failed, saying something about I'm using the wrong RUU. This is my CID and MID:
MID: 0P6B13000
CID: T-MOB010
I used this link to get my RUU:
http://www.htc.com/us/support/rom-downloads.html#tmobile
Am I doing something wrong?
Click to expand...
Click to collapse
What error number? If 155 or 159, you can't RUU from LP to MM (this is a new requirement they added with MM). You either need to flash the 6.20.531.5 full stock firmware from here, then run the RUU again. Or run the T-Mobile LP RUU.

S-Off, Unlocked - No OTA

Hi,
As much as I tried to look for this information, I didn't find a clear answer.
I have an M9 running 1.32.401.17 (stock recovery, from an old RUU), which is S-Off with unlocked bootloader. I was really expecting to get all the OTAs, so you can imagine my surprise when I didn't get any.
I then thought that I need to relock the bootloader, and then I will receive the OTAs. I relocked the bootloader, and again - no OTAs.
1. For an S-Off phone, should one receive OTAs with unlocked bootloader, or does one have to relock the bootloader (if so, to "locked" or to "relocked") to get OTAs?
2. Is the OS version on my phone so old that OTAs are not provided anymore?
3. Does it mean that if I manage to get a more "contemporary" OS version on my phone I'll get the OTAs?
4. If none of the above are correct, what do I need to do to get OTAs on my S-Off M9?
Thank you very much.
Adrian

Thanks to the fantastic post from Nikolay82 "HTC One M9 - 3.35.401.12 RUU installer how to guide!"
https://forum.xda-developers.com/one-m9/help/htc-one-m9-3-35-401-12-ruu-installer-t3318517
I managed to upgrade to 1.40.401.8.
After that I started to get OTAs (I'm now at 3.35.401.12) . So I can confirm that one doesn't need to relock the bootloader for an S-Off phone in order to receive OTAs (S-Off and UNLOCKED is fine).
I still don't know why I didn't get any OTA update for 1.32.401.17, but I'm happy that it worked from 1.40.410.8.
Cheers

Correct bootloader unlocked makes no difference. S-off makes no difference.
There is a possibility that htc have stopped the release of the earliest firmware. There is also a possibility that there was a problem but it would be solved by the update you did.

Even with S-ON you can receive updates with an unlocked bootloader.
The reason for your issue was the firmware you were using. 1.32.401.17 only got distributed in one single country. Therefore, only one specific CID of the handful of CIDs that belong to SKU 401 supports this "special" firmware version. In other words, you can't update a M9 and are stuck with that firmware if you aren't using the supported CID. The only solution is flashing a RUU with a different firmware version. That's why the RUU for 1.32.401.17 isn't linked in the ReadMe thread.
Edit: I can't tell you which CID actually corresponds to that "special" version since I forgot which one it was.
Sent from my HTC One M9 using XDA Labs

help me choosing the right RUU file for my HTC one M9

hello friends... currently i have a htc one m9 which i bought from another person. currently i m using viperone m9 4.3.0 marshmallow rom. current CID = 1111111 and MID=OPJA12000, i got this information from download-mode. ..( Baseband version =01.01_U11440792 ,and build number =3.35.401.12) . Unlocked+ S-OFF status. now , i m wanting to get back to full stock marshmallow.. so . i got "0PJAIMG_HIMA_UL_M60_SENSE70_TMUS_MR_TMOUS_3.39.531.41.zip" for my device to flash it through manualy from download mode..is it ok for my device model? and ,can i fully unlock the bootloader and install TWRP on that version? thanks in advance ...

No. You must find one that matches the 401 sku. Find the firmware ruu 3.35.401.12 as a zip file (not exe).
You also need to change the cid before you flash to htc_001. The mid might need to be changed too but I can't remember what it is.. Too stoned.. '0PJA10000'..?
Do not s-on. Do not lock/relock the bootloader.
Once stock you can take the ota updates to nougat and reroot etc..