hi, i tried to install lineage os for this smartphone, but unfortunately i encountered problems. so i tried formatting with standard recovery, but i think i made things worse.Things are changing with the advent of project treble and seamless updates. OnePlus will no longer release ROMs flashable via recovery (either stock) because is no more needed. The updates will be done on the slot not used for example if you are using slot a the update will be installed on slot b and the slot b will be set as default. If you brick and you are in bootloop how you can restore the rom? You can't with Stock ROM you have, because the zip can be only installed via Update Engine, so what can you do? Flash a stock rom via fastboot. I have extracted all images from the stock zip and i have made a new zip with the Fastboot ROM with a flash-all.bat included. This will work only if your bootloader is unlocked. This will erase all your data and will wipe your internal storage.
HOW TO FLASH
This version is only for not branded devices
Download the zip;
Unpack the zip in a folder;
Reboot the OnePlus Nord in fastboot-bootloader mode (Power and volume + and volume-);
Connect the OnePlus Nord to PC;
Run flash-all.bat flasher you need;
Wait until the process end;
The phone will automatically reboot.
DOWNLOAD
All roms on Sourceforge: https://sourceforge.net/projects/fastbootroms/files/OnePlus Nord/
BRANDED PHONE
For now branded device are not supported
MANUAL FLASH: Windows - OSX - Linux
If you want to manual flash these roms these are the commands (You need the latest sdk platform tools, you can find it here
REMEMBER
"Invalid sparce file format at header magic" is not an error, you need to wait a bit when you see that string, just wait.
If the device automatically reboot in Stock Recovery mode don't reboot it and wait the flash end.
These ROMs can't be used to update or downgrade your phone but just to restore your phone.
If the rom seems doesn't start go in recovery stock and follow this guideline: English -> Wipe data and cache -> Erase everything.
If you want to rebrand your phone from HydrogenOS to OxygenOS you can follow this guide: Rebrand Guide
If you want you can use also my tool to flash Factory Images, unlock bootloader, flash twrp or to understand if the device is recognized: https://toolaio.tk/
If you got some problems like write error or no partition, check this: https://forum.xda-developers.com/showpost.php?p=76658555&postcount=34
DONATE LINK
If you want to support this and others my projects please consider making a donation, thanks.
i tried using this tutorial with "10.5.5-EUROPE-NordOxygen_14_OTA_007_all_2008180221_b4a3dfa7c16d-FASTBOOT". it seems that partitions are missing. i also followed the link you suggested in case of problems with partitions, but it didn't help.
could someone help me? please.
i have been using ubuntu, and these are the issues:
Sending 'odm' (916 KB) OKAY [ 0.026s]
Writing 'odm' FAILED (remote: 'No such file or directory')
fastboot: error: Command failed
Invalid sparse file format at header magic
Sending sparse 'system' 1/4 (523157 KB) OKAY [ 15.521s]
Writing 'system' FAILED (remote: 'No such file or directory')
fastboot: error: Command failed
Invalid sparse file format at header magic
Sending sparse 'vendor' 1/3 (519986 KB) OKAY [ 15.648s]
Writing 'vendor' FAILED (remote: 'No such file or directory')
fastboot: error: Command failed
Invalid sparse file format at header magic
Sending sparse 'product' 1/3 (523058 KB) OKAY [ 16.164s]
Writing 'product' FAILED (remote: 'No such file or directory')
fastboot: error: Command failed
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