Update OP3 from 3.1.2 to OOS 5.0.1 (process and files required)

[AbhiM7]

Hi guys, I have a OP3 which is running on 3.1.2 Marshmallow.
I always get a notification for system update to 4.5.1. I've tried downloading and installing the update but after the first boot my OP crashes/gets bricked. There is only a Linux penguin logo that appears no matter what button you press.

From there I always have to follow the mega unbrick guide and get my phone back to working with stock recovery and 3.1.2.

I've tried side loading the downloaded file as well.
Then I've tried installing .zip file of 5.0.1 via TWRP, still no luck. it still bricks my phone.

Am comfortable rooting my phone, my bootloader is unlocked. I don't care too much about keeping root after updating my phone to the latest version, I would be grateful to anyone who can point me towards the proper full ROM files of 5.0.1 along with any firmware files that may be required.

And the exact process of when to flash the firmware and with/without which version of TWRP. I am ready to completely wipe and clear data.

in simple words I just want to update from 3.1.2 to 5.0.1. The simple downloading and updateing from the OTA update doesn't work.

 

[hellcat50]

Hi guys, I have a OP3 which is running on 3.1.2 Marshmallow.
I always get a notification for system update to 4.5.1. I've tried downloading and installing the update but after the first boot my OP crashes/gets bricked. There is only a Linux penguin logo that appears no matter what button you press.

From there I always have to follow the mega unbrick guide and get my phone back to working with stock recovery and 3.1.2.

I've tried side loading the downloaded file as well.
Then I've tried installing .zip file of 5.0.1 via TWRP, still no luck. it still bricks my phone.

Am comfortable rooting my phone, my bootloader is unlocked. I don't care too much about keeping root after updating my phone to the latest version, I would be grateful to anyone who can point me towards the proper full ROM files of 5.0.1 along with any firmware files that may be required.

And the exact process of when to flash the firmware and with/without which version of TWRP. I am ready to completely wipe and clear data.

in simple words I just want to update from 3.1.2 to 5.0.1. The simple downloading and updateing from the OTA update doesn't work.

Try this: https://downloads.oneplus.com/oneplus-3/oneplus_3_oxygenos_5.0.1/

 

[AbhiM7]

Try this: https://downloads.oneplus.com/oneplus-3/oneplus_3_oxygenos_5.0.1/

Hi, I've already downloaded this very stable file and tried flashing using TWRP

 

[hellcat50]

Hi, I've already downloaded this very stable file and tried flashing using TWRP

I read something about wrong batteries causing this problem. Do you use the original battery?

 

[AbhiM7]

I read something about wrong batteries causing this problem. Do you use the original battery?

I though of running a diagnosis check by dialing *#808# and looked up Charger option, it shows the battery as "itech_3000mah"
is that original?
I had given the phone to repair for water damage to a professional service chain (Not OnePlus, some company here called Yaantra). I've heard from talking to an official repair person of OnePlus that fake batteries are not possible for OnePlus.
The battery works absolutely alright, charges up nicely and I get decent SOT. Can't complain at all.