Solution: Your ROM zip is checking for device codename. Go to Menu → Terminal in Orange Fox and type: setprop ro.product.device DRG and setprop ro.build.product DRG, then retry flashing.
Solution: Your ROM restored stock recovery on boot. Reboot to bootloader, fastboot boot OrangeFox.img, then go to Settings and enable "Prevent recovery overwrite". Also, flash the Fox to both slots: fastboot flash boot_a OrangeFox.img and fastboot flash boot_b OrangeFox.img. orange fox recovery nokia 6.1 plus
Warning: Installing a custom recovery requires an unlocked bootloader. Unlocking voids warranty and may break Widevine L1 (Netflix HD). Do at your own risk. Solution: Your ROM zip is checking for device codename
Solution: Rare on DRG, but if happened, you flashed an incompatible version. Ensure you downloaded recovery specifically for DRG (Nokia 6.1 Plus), not DRG_sprout or any other variant. Solution: Your ROM restored stock recovery on boot