Method 1 (Emma) requires a locked bootloader. Method 2 (Test point) works even with a locked bootloader. Method 3 (FRP) doesn’t care about bootloader status.
Q: Is it safe to use a lock remove file for Sony Xperia E5 F3311? A: As long as you obtain the file from a reliable source and follow the manufacturer's instructions, using a lock remove file can be relatively safe. However, be aware of the potential risks, such as warranty voidance and data loss. sony xperia e5 f3311 lock remove file updated
The phrase is your gateway to a working phone again. However, after testing dozens of files and tools, here is the safest path: Method 1 (Emma) requires a locked bootloader
For advanced users, files and tools are often used to "flash" the device and bypass locks: How to Enter the Recovery Mode in SONY Xperia 1 VI Phone Q: Is it safe to use a lock