Inland Performance Plus 2TB 3D TLC NAND PCIe Gen 4 Firmware update ?

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I've been seeing "recently" that the phison e18 controllers on these NVME's might have a bug in the firmware that slows down read speeds for older files. My performance plus drive is on M31.6 firmware revision, does anyone know if a new firmware revision is available?

My results are definitely trending downwards for older files:

2025-07-29 12.17.15 Results for C.png

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