A corrupted system partition or incompatible module often causes infinite booting. The PAC file overwrites the corrupt system and vendor partitions with clean factory images.
Before you begin the flashing process, ensure you have the following tools and drivers installed on your Windows PC. Failure to install drivers is the most common cause of flashing errors.
Checksum example (genuine Android 10 PAC):
MD5: c4f3a2b1e8d7c9b0a5f1e2d3c4b5a678 (Always verify with the uploader's hash).
Yes, unless you are an authorized Nokia service partner. However, if the phone is already bootlooping, the warranty is typically void due to "unauthorized software modifications" unless it's a genuine OTA failure.