If your phone won't turn on properly, an OTA is impossible. The SWD tool can "force" a fresh install.
Flashing a ROM via the SWD tool typically wipes your internal storage. Back up your photos, contacts, and messages to the cloud or an external drive. swd user rom upgrade tool updated
Ensure your device is charged to at least 60% . A power failure mid-flash can permanently damage your hardware. If your phone won't turn on properly, an OTA is impossible
While Over-The-Air (OTA) updates are convenient, they aren't always the best choice. Using the SWD User ROM Upgrade Tool is preferred when: swd user rom upgrade tool updated
Before you hit that "Start" button, ensure you’ve covered these basics:
Always use the OEM cable that came with your device to ensure a stable data connection. How to Get Started