: The second loader that prepares the device's partitions for the actual firmware data.When you see an "FDL2 Failed" error, your PC has successfully communicated with the CPU (FDL1 passed), but the device cannot move to the next stage of preparing the storage for writing. Common Causes of FDL2 Failures
fpt -f newbios.bin -bios -D
(Flash Download 1) is sent to the device’s internal RAM to initialize the hardware. fdl2 failed
Do not trust "auto install."