If you want to update the bootloader with JTAG, use the .rom-files.
If you want to update with the bootloader itself, use .tft-files.
The 624 MHz bootloader bootloaders will run on Trizeps-IV (WL) modules with 624 MHz speed-grade.
The 520 MHz bootloader will run on Trizeps-IV (WL) modules with 624 or 520 MHz speed-grade.
The 416 MHz bootloader will run on Trizeps-IV (WL) modules with 624,520 or 416 MHz speed-grade.
The 312 MHz bootloader will run on Trizeps-IV (WL) modules with 624,520,416 or 312 MHz speed-grade.
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