Windows Mobile 6.5 Hard Reset Combinations

During the Windows Mobile 6.5 era, performing a hardware factory reset was an essential troubleshooting method, yet Microsoft never standardized a physical key sequence for the operating system. Because Windows Mobile ran on widely divergent form factors—ranging from full touchscreen slates to slide-out QWERTY keyboards and enterprise handhelds—original equipment manufacturers (OEMs) created proprietary bootloader-level key sequences. Users attempting to restore their devices had to navigate a landscape of brand-specific combinations involving volume keys, soft buttons, call keys, and recessed stylus reset pins.

HTC

HTC was the dominant manufacturer of Windows Mobile 6.5 devices, and its method typically revolved around the volume rocker combined with the power button or reset pin.

  • Dual-Volume Method (e.g., HTC Touch Pro2, HTC Touch Diamond2): Users held down both the Volume Up and Volume Down buttons simultaneously, then briefly pressed the Power button (or tapped the recessed reset hole with a stylus). Once the boot screen appeared, the user released the power button while continuing to hold both volume buttons until a text prompt appeared. The device then instructed the user to press Volume Up to confirm the data wipe or any other key to cancel.
  • Volume Down Method (e.g., HTC HD2): On the flagship HTC HD2, users held the Volume Down button and briefly pressed the Power button to power on the phone, continuing to hold Volume Down until the bootloader or reset screen loaded, followed by pressing Volume Up to execute the wipe.

Samsung

Samsung frequently incorporated physical telephony buttons—such as Call (Send) and End (Power)—along with dedicated lock or camera keys into its reset sequences.

  • Omnia Series (e.g., Samsung Omnia II / i8000): A common sequence required turning the phone off, then simultaneously pressing and holding the Call/Send button, the End/Power button, and the Lock button on the side.
  • Stylus Pin and Call Keys: On other Samsung models, users had to hold down both the physical Call and End keys on the front face while simultaneously inserting the stylus into the soft reset hole on the chassis, releasing the pin while continuing to hold the call keys until a confirmation dialog appeared.

Sony Ericsson

Sony Ericsson’s flagship Windows Mobile devices, such as the Xperia X1 and Xperia X2, featured distinctive front-facing hardware keys that dictated the reset routine.

  • Soft-Key Hold: With the device powered off, users pressed and held the Left Soft Key and Right Soft Key (the two upper silver buttons beneath the screen). While holding these keys, the user pressed the Power button once. The screen would present a prompt asking the user to press the Send (Call) button to confirm the hard reset or any other key to cancel.

HP (Hewlett-Packard)

HP’s iPAQ line, carrying over legacy designs from the Pocket PC era, heavily relied on combinations of application shortcut buttons and the stylus reset switch.

  • Application Key + Reset Pin: On devices like the iPAQ 110/210 and the iPAQ Glisten, users typically had to hold two specific front hardware keys (often the Calendar and Messaging shortcut buttons, or the Answer and Ignore keys) while using the stylus to press the recessed Reset button on the bottom or side of the unit. The front buttons had to remain depressed for several seconds after releasing the reset pin until the HP splash screen cleared and the formatting process began.

Enterprise Devices (Motorola / Symbol)

Industrial devices running Windows Mobile 6.5 (such as the Motorola/Symbol MC55 and MC65) were built without traditional consumer button layouts, leading to unique keypad combinations.

  • Keypad Shortcuts: Enterprise units typically required holding down the Power button while simultaneously pressing specific numeric or function keys (such as the 1 and 9 keys, or the Red Phone button). Other configurations required holding the primary Scan/Trigger buttons on the sides while pressing the reset pin with a stylus inside the battery compartment or chassis terminal.