[OnePlus 8 Guides, News, & Discussion] Incognit420:
Hello everyone! I have managed to get Global firmware on VZW UW OnePlus 8 and thought I would share.

Donations are appreciated. PayPal user @igp1490

You will need to download to get started.

1. FastbootEnhance: https://github.com/libxzr/FastbootEnhance/releases

2. Jaguar Rom Full: https://drive.google.com/file/d/1RIIZzz0IyVXeFdjjKRjgqdSphLxaE--w/view

3. Recovery: https://androidfilehost.com/?fid=15664248565197198941

4. PayloadDumper GUI. Download version 2.3: https://xdaforums.com/t/windows-pay...and-other-img-files-from-payload-bin.4442149/

5. Global OTA Firmware 11.0.11.11.IN21AA: https://www.thecustomdroid.com/download-oneplus-8-pro-oxygenos-ota-updates/

6. OnePlus 8 Visible OTA firmware: https://oxygenos.oneplus.net/OnePlu..._OTA_0080_all_2203082133_56fdf9c8718742cb.zip

7. Platform-tools, I'm using 33.0.3: https://www.techspot.com/downloads/downloadnow/5425/?evp=de0a68064118855fcddcc3980a2143c4&file=6062

Now to get started. First have bootloader unlocked of course.

1. Extract payload.bin from Visible OTA, then dump payload.bin with payload dumper. next find modem.img and move to desktop

2. Install Recovery

3.Be on A11 rom with A11 custom recovery or Install Jaguar Rom and go through setup.

Thanks to Bishop1312! for pointing out any A11 rom with A11 custom recovery works in step 3.

4. When Jaguar is setup reboot to fastboot

5. Run FastbootEnhance, double click your device that says fastboot

6. When in fastbootenhance click fastbootd then click little box to the left of "ignore unknown partitions" then select flash payload.bin and select global firmware zip. When flash is complete "select activate slot" my second slot to flash was slot B, you want to flash global to both slots.

7. After it installs click back in in Jaguar recovery and select "Factory reset", I did f2fs and regular format options

8. Afterformat is done reboot system

9. It may take a few minuets to get into the setup and you may get a message saying phone app has stopped working, don't worry just go through the setup process and connect to wifi.

10. when phone is setup turn off phone and boot into fastboot holding power+Vol down, when in fastboot connect to computer and run FastbootEnhancer. You should see your fastboot device, double click on fastboot, now in fastbootenhancer click reboot to Fastbootd. when in fastbootd go to Partitions tab in fastbootenhancer and look for Modem_b, click on modem_b to highlight it, then click erase then click flash and look for modem.img you put in desktop and select it to flash and after look for modem_a and follow same steps then reboot phone to system.

11. When phone is booted go to system updates and update. After update is finished reboot, after reboot follow steps 10 again for modem, continue step 10 until fully updated to Android 13. Verizon service will work in Android 13 but not 11 or 12.

One problem I have is if I turn on then off airplane mode it wont reconnect to Verizon service, you have to reboot phone and it will work again. I'm thinking maybe because it's an older modem.img, so if anyone can get there hands on the newer modem from Verizon or Visible newest OTA maybe that will fix the issue but no sure. This is my first guide so If anyone has problems let me know and i'll do my best to help you.

Hope ya'll enjoy.

Edit: I got EvolutionX A13 rom working! also airplane mode is working in EvolutionX A13 rom. You have to do step 10 every time after setting up new A13 roms. I Tried step 10 before going through setup but it just goes to bootloader, So make sure to complete rom setup before step 10.