Incorrect loader files can overwrite critical bootloaders. If you’re not a repair technician, do not attempt this .
These are less official but widely used for servicing. However, they carry more risk.
Your phone's e-fuse is blown to version 4, but you are flashing loader version 3. Solution: Find a firmware with Binary 4 (Look for U4 or B4 in the version).
If you are a technician or need to service this device, use these verified professional tools that have the Samsung A20s firehose loaders built natively into their databases: UnlockTool
When working on the exposed internal motherboard, use an anti-static wrist strap or work surface to prevent electrostatic discharge from damaging delicate components.
: Using tools like QFIL or UnlockTool to read specific data from the chip. Samsung Galaxy A20s (SM-A207) Key Specifications
A stable connection is vital; use an original or certified OEM cable.