• USB armory Mk II debug accessory
• Errata: incorrect silkscreen labels
• USB armory Mk II (rev. β)
• Errata: speed class limitation for external uSD and internal eMMC
• Errata: inverted UART RTS/CTS signals (resolved with workaround)
• Errata: unreliable serial connection to BLE module (resolved with workaround)
• USB armory Mk II (all revisions)
• Errata: unreliable USB Serial Downloader (resolved with workaround)
• Errata: charger detection issues
• Errata: Type-C plug/receptacle reset (plug: resolved, receptacle: workaround)
• Bug: instability with specific Linux kernel versions (resolved on <= 4.19, >= 5.3)
• Bug: glitch on CPU frequency changes (resolved)