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Lenovo System Firmware update 1.55 -> 1.56 deletes all SecureBoot keys and certs, disables SecureBoot / turns on Setup Mode and deletes all UEFI Boot entries · Issue #276 · fwupd/firmware-lenovo · GitHub
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Today-i-Received-an-BIOS-update-from-Insyde-H2OFFT-Flash-Firmware-Tool-Version-6-20 - English Community - LENOVO СООБЩЕСТВО
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BIOS for Windows 10 (64-bit) - Legion T530-28ICB, Legion C530-19ICB, Legion T5-28ICB05 Desktop - Lenovo Support ES
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