If the phone gets stuck on the logo or shows "corrupted" after flashing, you may need to flash the to repair the partition table, and then re-apply the MDM-free dump. Where to Find the Best Dump Files
Nokia G21 TA TA-1418, Fix Repair Unknown IMEI Original Solution NOKIA G21 TA-1418 MDM DUMP FILE SECURITY PATCH ...
REMOTE MANAGEMENT: ACTIVE. SYNCHRONIZING WITH UNKNOWN SERVER... If the phone gets stuck on the logo
Flashing firmware at this level carries a risk of hard-bricking the device if done incorrectly. Ensure you have the following assets prepared: : Download a verified Nokia G21 TA-1418 MDM Dump File Go to product viewer dialog for this item. NOKIA G21 TA-1418 MDM DUMP FILE SECURITY PATCH ...
: Connect to a Wi-Fi network during setup to verify that the phone no longer triggers the corporate MDM configuration page. Critical Considerations for Security Patches