There is no widely published academic paper specifically titled "Decompressing failed sak" , but the error relates to during image authentication or unpacking.
It seems you’re referring to the error message — a somewhat obscure issue that appears primarily in the context of Firmware Image Packages (FIP) for ARM Trusted Firmware (TF-A), U-Boot, or other bootloader environments (e.g., on Rockchip, Allwinner, or MediaTek SoCs).
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