Do not confuse this with a standard right-click format in Windows. A true low-level format (or a "full format" with partition removal) writes zeros to every sector of the drive. It erases boot sectors, partition tables, and any hidden file system flags. For a 501 upgrade, this is essential because the target machine expects a raw, bootable volume—not a "modern" FAT32 drive with leftover metadata.
: To remove these speed limits and unlock "Pro" features, users must purchase a license. Upon payment, the developer sends an upgrade code usb lowlevel format 501 upgrade code
The is not a hardware failure—it is a communication standards mismatch. By performing a true low-level format (zeroing every sector) and carefully rebuilding the partition table as MBR/FAT32, you override the hidden data that triggers error 501. Do not confuse this with a standard right-click