Huawei S7-721u Recovery Image Verify — Failed

You try to boot into recovery mode (usually by holding Power + Volume Up), and instead of seeing the familiar Android menu, you are met with a black screen, a dead Android robot with a red exclamation mark, or a text error stating "Verify Failed."

Bricked by a Byte: Fixing the “Recovery Image Verify Failed” Error on the Huawei S7-721u Huawei S7-721u Recovery Image Verify Failed

If you are holding an old Huawei MediaPad S7-721u (often just called the Huawei S7), you are likely a fan of rugged, compact tablets or you are trying to resurrect a device from the early 2010s. But there is a notorious roadblock that turns this device into a paperweight: You try to boot into recovery mode (usually