Develop Bugs

How to Downgrade from Marshmellow to Lollipop

I am using Sprint HTC M8
I have recently upgraded from Lollipop to Marshmellow through OTA update
Now i want to go back to Lollipop.
Will a simple RUU downgrade can take me back to Lollipop?
i can flash marshmellow wth RUU now i have checked.
but when i am trying to flash lollipop its giving me ERROR 155
Please help

tpteam6 said:
I am using Sprint HTC M8
I have recently upgraded from Lollipop to Marshmellow through OTA update
Now i want to go back to Lollipop.
Will a simple RUU downgrade can take me back to Lollipop?
i can flash marshmellow wth RUU now i have checked.
but when i am trying to flash lollipop its giving me ERROR 155
Please help
Click to expand...
Click to collapse
Not if you're s-on

bford152 said:
Not if you're s-on
Click to expand...
Click to collapse
i am s-off

tpteam6 said:
i am s-off
Click to expand...
Click to collapse
Error 155 is usually a firmware or HTC signigature issue.. just flash the old lp firmware and run the ruu. Gotta downgrade firmware before the ruu will match the signatures.

any guide or reference for that?

tpteam6 said:
any guide or reference for that?
Click to expand...
Click to collapse
btw why do you want to downgrade?
i am asking because i am still on lollipop and was thinking of upgrade

http://forum.xda-developers.com/showthread.php?t=2696282

lekhwani said:
btw why do you want to downgrade?
i am asking because i am still on lollipop and was thinking of upgrade
Click to expand...
Click to collapse
after upgrading from lollipop to marshmellow i am recieving a notification for hands free activation. mine is a sprint unlocked phone. I am currently in Bangladesh. I cant find a way to activate this phone.

bford152 said:
http://forum.xda-developers.com/showthread.php?t=2696282
Click to expand...
Click to collapse
I have read that Marshmellow firmware is different than Lollipop, so if i flash lollipop firmware will my device boot? if it dosent boot i cant flash RUU...

i have a semi same problem but i have error 159 : image error ...... how can i resolve it

Just fastboot an old hboot or firmware guys. Then run the ruu. Simple.
Sent from my HTC One_M8 using Tapatalk

tony_5309 said:
Just fastboot an old hboot or firmware guys. Then run the ruu. Simple.
Sent from my HTC One_M8 using Tapatalk
Click to expand...
Click to collapse
Is it possible for s-on devices?

Arsinn said:
Is it possible for s-on devices?
Click to expand...
Click to collapse
Not possible on S-On, only on S-Off
And to OP ... make sure you don't flash a GSM firmware on your Sprint device, it may brick the radio or totally brick it.

ckpv5 said:
Not possible on S-On, only on S-Off
And to OP ... make sure you don't flash a GSM firmware on your Sprint device, it may brick the radio or totally brick it.
Click to expand...
Click to collapse
Could you please suggest me a firmware safe for me to flash?
I am planning to use this RUU for downgrading to Lollipop:
lollypop:
RUU_M8_WHL_L50_SENSE60_SPCS_MR_Sprint_WWE_4.25.651 .14_Radio_1.09.20.0209_NV_SPCS_1.52_003_release_42 6232_signed_2
http://www.droidviews.com/restore-sprint-htc-one-m8-to-stock-rom-with-ruu/

I have flashed this firmware:
https://www.androidfilehost.com/?fid=23991606952612412
Now trying to flash lollipop, hope it will work!

It worked.. thanks for the help.

Can someone explain step by step of downgrading please.I have Sprin HTC One 8 . I hate marshmallow , my phone battery is drained after couple hours, it's warming up, I lost my contacts, contacts don't want to sync from FB etc. How I can downgrade back to previous software. Thank you.

I want to down grade because the phone is horribly slow since upgrading to 6.

Quaywe said:
I want to down grade because the phone is horribly slow since upgrading to 6.
Click to expand...
Click to collapse
Cool. So what is the question?
There is some info on the thread about how to downgrade. But to be any more specific, you need to give some info about your phone (fastboot getvar all, and post the results - delete your IMEI and serial number before posting).

Frustrating
This is very frustrating, I can not downgrade due to the firmware issue. Where can I get an older firmware for
a developer phone, s-off and bs_us001?
tpteam6, how did you find yours? I search, but found nothing. Some twrp nand backup stuff.

Can't downgrade from nougat to marshmallow!

Hello everybody,
I got an issue. I recently updated my M9 to nougat and today I tried to downgrade (With OPJAIMG method from bootloader) but with no success. I also tried to push from adb and the ruu.exe method but none worked. You guys know any sollutions?? Obviously I changed MID and CID to international before doin' all this.
I noticed that I can't even install CM anymore (gives me fail 7 even if in the build.prop i see that himaulatt is supported.)
Hope someone can figure this out.
Thanks....

The reason for your problems is the same because of which people on any 3.x firmware can't flash the 4.x RUU. The encryption keys changed between the two firmware version. You need to flash one of the full wipe or no wipe firmware packs since they're not encrypted and contain the encryption key for their specific firmware. This way you restore the ability to flash a 3.x RUU.
Sent from my HTC One M9 using XDA Labs

All done...thank you so much... U just made my day

Flippy498 said:
The reason for your problems is the same because of which people on any 3.x firmware can't flash the 4.x RUU. The encryption keys changed between the two firmware version. You need to flash one of the full wipe or no wipe firmware packs since they're not encrypted and contain the encryption key for their specific firmware. This way you restore the ability to flash a 3.x RUU.
Sent from my HTC One M9 using XDA Labs
Click to expand...
Click to collapse
hi,
Same things happened to me.
I flashed android 7.0 firmware(developer firmware and rom) and 7.0 RUU.exe. and I wanted to go back to android 5.0.2. I flashed 1.xx full wipe firmware and 5.0.2 custom rom. but it caused a bootlop until flashed a 6.0 firmware.

I think that you have to flash boot.img from the zip with fastboot.

Flippy498 said:
The reason for your problems is the same because of which people on any 3.x firmware can't flash the 4.x RUU. The encryption keys changed between the two firmware version. You need to flash one of the full wipe or no wipe firmware packs since they're not encrypted and contain the encryption key for their specific firmware. This way you restore the ability to flash a 3.x RUU.
Sent from my HTC One M9 using XDA Labs
Click to expand...
Click to collapse
Dear Bro,
could you tell us the link to download Firmware with full wipe or Firmware with No wipe.
also if you please, could you give us the tutorial to downgrade from Nougat.
thank you, Bro.

shahnaz said:
Dear Bro,
could you tell us the link to download Firmware with full wipe or Firmware with No wipe.
also if you please, could you give us the tutorial to downgrade from Nougat.
thank you, Bro.
Click to expand...
Click to collapse
Everything that isn't already explained somewhere else is explained in my last post. The firmware packs are located in this thread. If you don't know how to flash a RUU you might want to (re-)read the ReadMe thread.

Flippy498 said:
Everything that isn't already explained somewhere else is explained in my last post. The firmware packs are located in this thread. If you don't know how to flash a RUU you might want to (re-)read the ReadMe thread.
Click to expand...
Click to collapse
DONE!!
thanks bro, thanks for the firmware packs location.
for to flash RUU, i already know it.is, maybe there is friend in here doesnt know.
my HIMA already back to android 6.0
:good:

i am currently on nougat with s-on, can i do the full wipe restore for 3.x firmware? or can i flash directly with 3.x ruu using the sd card method?

can u provide to me the link to download full wipe firmware for my htc one a9 please?

samweli benjamin said:
can u provide to me the link to download full wipe firmware for my htc one a9 please?
Click to expand...
Click to collapse
You need to search for them in the forum that belongs to your device. This is the HTC One M9 forum. Chances are very high that no one here owns an A9 and therefore probably no one has the files you need.
Sent from my HTC One M9 using XDA Labs

ruu question

Hi,
Have just got a 2nd hand m9 that I'd like to update to Nougat. It is rooted but not s-off and on lollipop custom rom. Am I right in thinking that I need to install the latest ruu for lollipop, then the same for marshmallow and then lastly for nougat before I can install a nougat ROM?
Thanks

Yes. Updates are incremental. You need to have a stock phone before you can flash ruu's. You need s-off otherwise, which is well worth the money!.
Beamed in by telepathy.

pinn___________ said:
Hi,
Have just got a 2nd hand m9 that I'd like to update to Nougat. It is rooted but not s-off and on lollipop custom rom. Am I right in thinking that I need to install the latest ruu for lollipop, then the same for marshmallow and then lastly for nougat before I can install a nougat ROM?
Thanks
Click to expand...
Click to collapse
RUUs are not incremental. However, HTC changed the encryption key between firmware 3.x and 4.x. You therefore need to flash a 3.x ruu and to install the non-encrypted OTA afterwards. Be aware that you can't change your sku without S-OFF. That means if you don't own the developer edition (sku 617) you won't be able to update to android 7 since that version is the only one that received the update, yet.
shivadow said:
Yes. Updates are incremental. You need to have a stock phone before you can flash ruu's. You need s-off otherwise, which is well worth the money!.
Beamed in by telepathy.
Click to expand...
Click to collapse
That's not correct. A RUU doesn't care whether your phone is stock or that. It reflashes every partition of your phone as long as your download mode is working.
Sent from my HTC One S using XDA Labs

Flippy498 said:
RUUs are not incremental. However, HTC changed the encryption key between firmware 3.x and 4.x. You therefore need to flash a 3.x ruu and to install the non-encrypted OTA afterwards. Be aware that you can't change your sku without S-OFF. That means if you don't own the developer edition (sku 617) you won't be able to update to android 7 since that version is the only one that received the update, yet.
That's not correct. A RUU doesn't care whether your phone is stock or that. It reflashes every partition of your phone as long as your download mode is working.
Sent from my HTC One S using XDA Labs
Click to expand...
Click to collapse
So am I right in assuming that I can't flash any RUU without s-off? Also, how would I know if it's a dev edition or not? Thanks

pinn___________ said:
So am I right in assuming that I can't flash any RUU without s-off? Also, how would I know if it's a dev edition or not? Thanks
Click to expand...
Click to collapse
The dev edition is indicated by the sku (617) which is part of the firmware version: x.xx.SKU.xx
Please read the HTC One (M9) Readme Thread. All needed information should be located on its first page.

Flippy498 said:
The dev edition is indicated by the sku (617) which is part of the firmware version: x.xx.SKU.xx
Please read the HTC One (M9) Readme Thread. All needed information should be located on its first page.
Click to expand...
Click to collapse
Hi Flippy,
Thank for the links. As I mistakenly tried to flash a custom nougat rom on my lollipop device, I'm trying to get it back up and running. I still have access to TWRP and was looking at the back ups that you provided. However, I'm uncertain which to flash as I don't know which is the SKU of my mob. How can this be found out?

The readme thread should contain steps (in the RUU section and the twrp section II) for finding out the current firmware version of your phone. Did I forget to add them to the flashing instructions?
Sent from my HTC One M9 using XDA Labs

Flippy498 said:
The readme thread should contain steps (in the RUU section and the twrp section II) for finding out the current firmware version of your phone. Did I forget to add them to the flashing instructions?
Sent from my HTC One M9 using XDA Labs
Click to expand...
Click to collapse
No,,that's there but I already know what f/w I'm on - 1.32.401.15. Tried flashing a custom ROM of that version but it's sticking at the HTC logo. I would have thought reflashing a ROM of the same version would have worked but did I bork something when flashing a N rom?
I'm uncertain how to find the SKU but guessing it's 61 (EE UK). Is that going to be my only way forward - ruu or twrp backup?
Thanks for the help!

pinn___________ said:
No,,that's there but I already know what f/w I'm on - 1.32.401.15. Tried flashing a custom ROM of that version but it's sticking at the HTC logo. I would have thought reflashing a ROM of the same version would have worked but did I bork something when flashing a N rom?
I'm uncertain how to find the SKU but guessing it's 61 (EE UK). Is that going to be my only way forward - ruu or twrp backup?
Thanks for the help!
Click to expand...
Click to collapse
Flippy498 said:
The dev edition is indicated by the sku (617) which is part of the firmware version: x.xx.SKU.xx
Please read the HTC One (M9) Readme Thread. All needed information should be located on its first page.
Click to expand...
Click to collapse
Re-read what I wrote before and pay attention to the part I highlighted in my quotes.
Btw, since many users make the same mistake I need to ask the following: You checked your firmware in download mode and not in settings>about, correct? The latter only shows you the base of the (custom) rom you're currently using and not your actual firmware.
You're firmware is quite old. I'd suggest you to flash the 3.35.401.12 RUU and to start from scratch. In general, you can't use roms that are based on a different firmware version than your current one. (Sidenote: I'm only talking about the major version number here - in this case the 3.)
There is no Nougat for SKU 401 at the moment but it should get released in the near future.

Flippy498 said:
Re-read what I wrote before and pay attention to the part I highlighted in my quotes.
Btw, since many users make the same mistake I need to ask the following: You checked your firmware in download mode and not in settings>about, correct? The latter only shows you the base of the (custom) rom you're currently using and not your actual firmware.
You're firmware is quite old. I'd suggest you to flash the 3.35.401.12 RUU and to start from scratch. In general, you can't use roms that are based on a different firmware version than your current one. (Sidenote: I'm only talking about the major version number here - in this case the 3.)
There is no Nougat for SKU 401 at the moment but it should get released in the near future.
Click to expand...
Click to collapse
Ahah, yep , I get it now!
Yes, checked as suggested in your very helpful thread. I'll follow your suggestion re. flashing also. Thanks for all your help.

Flippy498 said:
Re-read what I wrote before and pay attention to the part I highlighted in my quotes.
Btw, since many users make the same mistake I need to ask the following: You checked your firmware in download mode and not in settings>about, correct? The latter only shows you the base of the (custom) rom you're currently using and not your actual firmware.
You're firmware is quite old. I'd suggest you to flash the 3.35.401.12 RUU and to start from scratch. In general, you can't use roms that are based on a different firmware version than your current one. (Sidenote: I'm only talking about the major version number here - in this case the 3.)
There is no Nougat for SKU 401 at the moment but it should get released in the near future.
Click to expand...
Click to collapse
BTW, I had the issue you described here:-
Copy the file to the root directory of a SD card which is formatted to fat32. (If you're on firmware version 3.x you can use an exfat formatted SD card, too. It would be nice if a firmware 4.x user could confirm whether the exception apllies to the new version, as well.) Sometimes this is only possible if the SD card is directly connected to your PC and not put into your phone. I don't know why some M9s refuse the copy process.
If you delete the file extension , the phone will allopw the copy and then you can rename after.

pinn___________ said:
BTW, I had the issue you described here:-
Copy the file to the root directory of a SD card which is formatted to fat32. (If you're on firmware version 3.x you can use an exfat formatted SD card, too. It would be nice if a firmware 4.x user could confirm whether the exception apllies to the new version, as well.) Sometimes this is only possible if the SD card is directly connected to your PC and not put into your phone. I don't know why some M9s refuse the copy process.
If you delete the file extension , the phone will allopw the copy and then you can rename after.
Click to expand...
Click to collapse
Nice to know. Thanks. I'll add that info to the instructions.

Help with Restoring Stock Android on HTC 10 CID: HTC__060 RUU 3.18.400.2

Hi guys, I need help in restoring my HTC 10 to stock android and the problem is I can't seem to find any RUUs or TWRP backups for my OS version. I was stupid enough NOT to do a TWRP backup myself.
I'm currently on PureFusion OS Android 8.0 but the homebutton/fingerprint doesn't work. I checked their forums and it says i have to downgrade back to Stock Android 7.0 then flash PureFusion 8.0 again. Problem is, I'm stuck at the downgrade part!
Link: forum.purefusionos[.com]/threads/purefusion-on-htc-no-sim-detected.10/
I have the exact same problem with the OP on the post, but I solved my sim issue by restoring a stock recovery.
Anyone can help me find a suitable RUU or TWRP backup for OS ver 3.18.400.2 and CID HTC__060?
Much appreciated.

amnshm said:
Hi guys, I need help in restoring my HTC 10 to stock android and the problem is I can't seem to find any RUUs or TWRP backups for my OS version. I was stupid enough NOT to do a TWRP backup myself.
I'm currently on PureFusion OS Android 8.0 but the homebutton/fingerprint doesn't work. I checked their forums and it says i have to downgrade back to Stock Android 7.0 then flash PureFusion 8.0 again. Problem is, I'm stuck at the downgrade part!
Link: forum.purefusionos[.com]/threads/purefusion-on-htc-no-sim-detected.10/
I have the exact same problem with the OP on the post, but I solved my sim issue by restoring a stock recovery.
Anyone can help me find a suitable RUU or TWRP backup for OS ver 3.18.400.2 and CID HTC__060?
Much appreciated.
Click to expand...
Click to collapse
Here is Nougat RUU
https://androidfilehost.com/?w=files&flid=258738
as you didn't say what firmware your on or if your S off this is the best I can help you with.

yldlj said:
Here is Nougat RUU
androidfilehost.com/?w=files&flid=258738
as you didn't say what firmware your on or if your S off this is the best I can help you with.
Click to expand...
Click to collapse
Thanks friend, i will try to see if that works! I am S-On but im not sure how to identify my firmware.

amnshm said:
Thanks friend, i will try to see if that works! I am S-On but im not sure how to identify my firmware.
Click to expand...
Click to collapse
Boot to download mode and it will say your firmware version next to OS. RUU won't flash if your downgrading while S ON.

yldlj said:
Boot to download mode and it will say your firmware version next to OS. RUU won't flash if your downgrading while S ON.
Click to expand...
Click to collapse
My firmware is 3.18.400.2
I tried using Sunshine tool to turn S-Off but it wont work in PureFusion. Any ideas how to work around this?

amnshm said:
My firmware is 3.18.400.2
I tried using Sunshine tool to turn S-Off but it wont work in PureFusion. Any ideas how to work around this?
Click to expand...
Click to collapse
Sorry but no. Not sure why sunshine won't work.

Purefusion is probably to modified. Try maximus rom, it's as close to a stock sense rom you can get. S-off with that rom as driver and sunshine will likely work

Mr Hofs said:
Purefusion is probably to modified. Try maximus rom, it's as close to a stock sense rom you can get. S-off with that rom as driver and sunshine will likely work
Click to expand...
Click to collapse
Thanks! I'll give that a shot

Need HTC 10 x.xx.118.x ruu for s-on / updating lineage OS 14.1 to 15.1 (16.0)

As in title i looked for it everywhere i cant find any. I want to install lineage os 15.1 but i have 14.1 installed. any ideas?
@edit downloaded 7.0 ruu then 8.0 OTA and installed lineage. Solved.

filipgpl said:
As in title i looked for it everywhere i cant find any. I want to install lineage os 15.1 but i have 14.1 installed. any ideas?
Click to expand...
Click to collapse
So it's time to update to oreo firmware first.
You need the ruu that matches the OS line in download mode. Not all x.xx.118 ruu files will work. If you have a S-ON device that is. Check the number and post it here so we can have a look.

i need any ruu file so i can downgrade and do ota or just upgrade with ruu
i installed viper10 but ota shows no updates :/ (7.0)
my CID is t-mob009
2.41.118.4

filipgpl said:
i need any ruu file so i can downgrade and do ota or just upgrade with ruu
i installed viper10 but ota shows no updates :/ (7.0)
my CID is t-mob009
2.41.118.4
Click to expand...
Click to collapse
Of course it doesn't show an update, a custom rom never offers OTA updates and definetly no firmware updates.
https://firmware.gem-flash.com/index.php?a=browse&b=file-info&id=51456
i can find one here, that's all for now i can offer you.

Mr Hofs said:
Of course it doesn't show an update, a custom rom never offers OTA updates and definetly no firmware updates.
https://firmware.gem-flash.com/index.php?a=browse&b=file-info&id=51456
i can find one here, that's all for now i can offer you.
Click to expand...
Click to collapse
i would rather spend money on s-off . The thing i need to install 9.0 custom rom. there are firmwares for my cid here:
https://forum.xda-developers.com/htc-10/how-to/8-0-htc-10-oreo-firmware-t3756126
the thing is... what can i do with them without s-off?

filipgpl said:
i would rather spend money on s-off . The thing i need to install 9.0 custom rom. there are firmwares for my cid here:
https://forum.xda-developers.com/htc-10/how-to/8-0-htc-10-oreo-firmware-t3756126
the thing is... what can i do with them without s-off?
Click to expand...
Click to collapse
Nothing......
Then indeed spending money on S-OFF would be a good investment. First thing i did when i bought the HTC10

Mr Hofs said:
Nothing......
Then indeed spending money on S-OFF would be a good investment. First thing i did when i bought the HTC10
Click to expand...
Click to collapse
which one i shoud take to upgrade my phone? combined signed , signed hboot or just signed?

filipgpl said:
which one i shoud take to upgrade my phone? combined signed , signed hboot or just signed?
Click to expand...
Click to collapse
At least a signed one that's around 1900 mb. Only the firmware is of no use. If you mean the files from gem flash.

Mr Hofs said:
At least a signed one that's around 1900 mb. Only the firmware is of no use. If you mean the files from gem flash.
Click to expand...
Click to collapse
why not?

filipgpl said:
why not?
Click to expand...
Click to collapse
because when you flash that firmware your OS isn't stock and you can't update to oreo via OTA.

Mr Hofs said:
because when you flash that firmware your OS isn't stock and you can't update to oreo via OTA.
Click to expand...
Click to collapse
if im able to flash 3.xxxxx i wont need OTA. and 2 others i need to downgrade. there is a tutorial and i did it once.

i have downloaded 2.41.118.4 signed 2GB. what can i do with it? can i just restore my OS because its same version?

filipgpl said:
if im able to flash 3.xxxxx i wont need OTA. and 2 others i need to downgrade. there is a tutorial and i did it once.
Click to expand...
Click to collapse
i know there is a tutorial for that.
filipgpl said:
i have downloaded 2.41.118.4 signed 2GB. what can i do with it? can i just restore my OS because its same version?
Click to expand...
Click to collapse
you restore your OS to stock by flashing it, after that reboot and install the official htc OTA and you are on oreo.
i'm only giving you the most easy way to upgrade to oreo because that's what you want because you want to run LOS 15, these are all my experiences and i try to help. If you find another way easier and that way suits you more please be my guest.
:good:

flashing it with twrp? or how?

filipgpl said:
flashing it with twrp? or how?
Click to expand...
Click to collapse
No rename the zip to only "2PS6IMG.ZIP" and put it on the SD card, then boot to download mode and proceed to flash it. The file will be recognized, if it isn't you didn't rename it properly.

flash it with fastboot flash zip 2PS6IMG.ZIP ? or rebootruu then flash? or it will show me the file?
also i do have unlocked bootloader. do i have to relock it?

filipgpl said:
flash it with fastboot flash zip 2PS6IMG.ZIP ? or rebootruu then flash? or it will show me the file?
also i do have unlocked bootloader. do i have to relock it?
Click to expand...
Click to collapse
No just do as i wrote above.....

i did what you wrote but how do i "proceed to flash it"?

filipgpl said:
i did what you wrote but how do i "proceed to flash it"?
Click to expand...
Click to collapse
As i said.......rename the file, copy it to your phones SD card and boot to download mode. Then it will ask you to press volume up to flash or volume down to cancel.
Can't make it easier

ohh. you mean SD card not internal memory? that would be a problem :/ it doesnt do anything when its on internal memory. Also i tried to flash it as ruu but it didnt worked so im flushing each zip according to their number.. lets hope it will work becuase they do flash