Can't flash stock firmware - OnePlus 8 Questions & Answers

Trying to revert to stock Rom.
Unable to sideload it. Any help would be awesome

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[Q] Back to stock

how can i go back to stock ics, with my LwW? thanks
just flash the stock rom via odin. and update as you normally would.

Cannot update via ota

Hi I'm new to the nexus series. I have just tried to flash a cm11 rom and then back to stock. Now I cannot use OTA to get 4.4.2 update
Just manually flash it with whatever custom recovery you have installed or sideload it with adb.
Check out this guide. The method depends on what you want (100% stock? Just the update?...)

[Q] Return to stock (get warranty back)

Hi,
I must return to stock ics to get back my warranty. Now i have custom bootloader + cwm and of course custom rom. If i think good that's should i do:
1. Flash official V30a.kdz via KDZ Flashing Software
2. Bring back stock bootloader and stock recovery via simpletool
or
1. Bring back stock bootloader and stock recovery via simpletool
2. Flash official V30a.kdz via KDZ FlashingSoftware
or i was thinking about installing v30a zip in cwm and then return to stock bootloader.
Which option is correct ?
matekns said:
Hi,
I must return to stock ics to get back my warranty. Now i have custom bootloader + cwm and of course custom rom. If i think good that's should i do:
1. Flash official V30a.kdz via KDZ Flashing Software
2. Bring back stock bootloader and stock recovery via simpletool
or
1. Bring back stock bootloader and stock recovery via simpletool
2. Flash official V30a.kdz via KDZ FlashingSoftware
or i was thinking about installing v30a zip in cwm and then return to stock bootloader.
Which option is correct ?
Click to expand...
Click to collapse
Just flash the stock u-boot and then the stock .kdz and you are good to go!
//Sent from somewhere in your house

[Q] If i want to flash Lollipop do I have to stock everything?

I want to flash the lollipop factory image. My phone is on 4.4.4 as an unlocked bootloader and is rooted. Do i have to return to stock to flash the image?
Thanks in advance
when flashing a factory img, you wipe out your partitions. why would you have to flash stock for that? also, you would have to reroot. why not just flash a flashable zip of lollipop stock or aosp? found in the android development section for the n5.

Unroot and update to Lollipop without stock recovery

Hello,
I have a rooted Verizon HTC One M8 running on Android 4.4.2. I do not have the stock recovery and for some reason I am unable to flash CWM, so I am stuck with TWRP. I keep receiving notifications that Lollipop is available to install, but it fails each time I try to install it because I am rooted. How can I unroot and get back to my stock ROM so that I can install the update?
No need to update via OTA. Just follow the instructions here and you'll be on rooted 5.0.1 stock
http://forum.xda-developers.com/ver...u-m8vzw-5-0-1-s-off-onlynewest-t3047103/page3
Questions
Thank you for the reply. Are you 100% sure this is compatible/will work with my phone? If I flash the ROM and it doesn't work, can I simply flash a backup image I made to recover? And when I flash the ROM, will I lose all the data on my phone? Also, where may I download my stock recovery? I searched all over the internet and couldn't find one for the Verizon version of the HTC One M8.
Thank you
That RUU is a complete stock firmware package, including the recovery. Read the OP.
But if you're just looking for the stock recovery you can find it here: http://forum.xda-developers.com/showthread.php?p=52017763
That alone won't let you take the OTA though. If you modified your stock rom the OTA will fail.
You can find a complete stock rom elsewhere here on XDA, but why the trouble if you have it all in one neat package with the RUU?
Thank you very much for the help and useful information.
Sorry to bother you with all the questions but I have one more. How do I make a backup of my stock recovery? Say I went out and bought a new phone, how would I backup that stock recovery?
Image Update Error
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