Flash RUU with SD card method

[tominozh]

Hi all, I am not sure if any of you is useing this method to RUU back your device but if you dont want to mess with fastboot and so on there is actually a very easy way to do it. the ony thing you need is RUU and sdcard.
1. rename RUU to 2PQ9IMG.zip
2. copy zip in the root of your sd card. - external card / not internal - it will not work
3. reboot to download mode, if for some reason you cant/are not able to/, reboot to bootloader and then select download mode
4. your device will pick up the zip file and flash it.
5.follow on screen instructions and enjoy your RUU-ed htc one a9

This method of flashing ruu is not new, it has been around for a while, just the name of the zip is always different.
I learned this when i had htc one S and htc one m8.

 

[fahadmeyo]

Will it work with S-off too ? I have sprint variant and want to get back to stock and receive OTAs

 

[Fischfuss]

Yes, works with S-Off!
With S-off you can install any RUU by setting up the correct SID/MID before flashing the RUU.

 

[fahadmeyo]

Yes, works with S-Off!
With S-off you can install any RUU by setting up the correct SID/MID before flashing the RUU.

and how we are supposed to do that ? well I got this phone in used condition.. its sprint and im using it outside US.. so it is network unlocked and twrp installed .. I'm an old htc user but not new to flashing and rooting .. never tried to s-off any of my devices before.. so I was wondering what more is needed to flash ruu to get back stock when I'm S-off

 

[Fischfuss]

If you just want to get back to the stock system the Phone came with, theres nothing more to do then flashing the correct RUU.

Only if you want to change from sprint to for example Europe version, you have to setup the correct SID/MID before flashing and for this you need to be S-Off

 

[Jacksie77]

Thanks bruh. Soft bricked my device and this was the easiest simplest way to unbrick.
Bonus as I was trying to get back to stock in the first place

Gentleman

 

[revcp]

Probably self-evident, but where do I download the RUU.zip?

 

[Sheran591]

OS and Radio needed

and how we are supposed to do that ? well I got this phone in used condition.. its sprint and im using it outside US.. so it is network unlocked and twrp installed .. I'm an old htc user but not new to flashing and rooting .. never tried to s-off any of my devices before.. so I was wondering what more is needed to flash ruu to get back stock when I'm S-off

I accidently deleted the OS and gave my phone for repairing as I am not used to flashing and rooting stuff.
but after that I am not able to use my cellphone on data connections, mobile data disconnected error .
Can you please send me the radio version and OS version details so I can install the same to use my cellphone. Mine is also Sprint A9. Also any further help will be highly appreciated.

 

[Browniano]

Tominozh, thanks for your post. I'm having some troubles with my HTC One a9 and would like to reinstall the official ROM.
My questions:
a) The RUU provided by HTC is a file with exe extension. Do I have to convert to zip and then rename it?
b) When I "Reboot to Bootloader" (Download Mode doesn't work) and select "Boot Download Mode", HTC only says "SD Mounted" and goes back to the previous menu. My device didn't pick up the file

Hi all, I am not sure if any of you is useing this method to RUU back your device but if you dont want to mess with fastboot and so on there is actually a very easy way to do it. the ony thing you need is RUU and sdcard.
1. rename RUU to 2PQ9IMG.zip
2. copy zip in the root of your sd card. - external card / not internal - it will not work
3. reboot to download mode, if for some reason you cant/are not able to/, reboot to bootloader and then select download mode
4. your device will pick up the zip file and flash it.
5.follow on screen instructions and enjoy your RUU-ed htc one a9

This method of flashing ruu is not new, it has been around for a while, just the name of the zip is always different.
I learned this when i had htc one S and htc one m8.

 

[Browniano]

2nd attempt:
a) Downloaded HTC ROM Unlocked from official web page: RUU_PERFUME_WL_N70_SENSE80GP_MR_NA_Gen_Unlock_2.41.617.3.exe
b) Converted the file to zip and renamed to 2PQ9IMG.zip
c) Saved that file to SD Card
d) Power on + Vol Down
e) HTC Recognized SD Mounted >>> Vol Up to Start Flash

Results:
- Message "12 RU_ZIP_ERROR" :crying:
- Message "Fail12 RU_ZIP_ERROR" :crying:

Hi all, I am not sure if any of you is useing this method to RUU back your device but if you dont want to mess with fastboot and so on there is actually a very easy way to do it. the ony thing you need is RUU and sdcard.
1. rename RUU to 2PQ9IMG.zip
2. copy zip in the root of your sd card. - external card / not internal - it will not work
3. reboot to download mode, if for some reason you cant/are not able to/, reboot to bootloader and then select download mode
4. your device will pick up the zip file and flash it.
5.follow on screen instructions and enjoy your RUU-ed htc one a9

This method of flashing ruu is not new, it has been around for a while, just the name of the zip is always different.
I learned this when i had htc one S and htc one m8.

 

[Taskin144]

2nd attempt:
a) Downloaded HTC ROM Unlocked from official web page: RUU_PERFUME_WL_N70_SENSE80GP_MR_NA_Gen_Unlock_2.41.617.3.exe
b) Converted the file to zip and renamed to 2PQ9IMG.zip
c) Saved that file to SD Card
d) Power on + Vol Down
e) HTC Recognized SD Mounted >>> Vol Up to Start Flash

Results:
- Message "12 RU_ZIP_ERROR" :crying:
- Message "Fail12 RU_ZIP_ERROR" :crying:

To my understanding, the RUU exe file you downloaded is a tool to download the actual firmware onto the device and is not a zip that can be flashed in a straightforward manner.
Check https://forum.xda-developers.com/one-a9/general/wip-ruu-htc-one-a9-t3240344 for flashable RUU zips