Device is frozen
If your Flipper Zero froze during use, and is seemingly unresponsive to any inputs, the device must be rebooted. In order to reboot your Flipper, press and hold the LEFT and BACK buttons to reboot it.
Device does not power on
If your Flipper Zero does not power on despite being charged, it is possible your Flipper's firmware has gotten corrupted. In order to restore the firmware, it is possible to repair it through the use of the qFlipper desktop application and the built-in Device Firmware Update (DFU) bootloader.
In order to repair the device's firmware, the DFU bootloader must first be activated. This can be done by following these steps:
- Disconnect the USB and any external power supplies from your Flipper
- Press and hold the BACK button for 30 seconds to force a hardware power reset
- Hold the LEFT and BACK buttons simultaneously for 3 seconds to force a reboot
- Press and hold the BACK and OK buttons for 35 seconds
At this point, the DFU bootloader should have been activated, and the device is ready to proceed with firmware repair.
- Open qFlipper on your computer
- Plug the USB cable into your Flipper and connect it to your computer
- Press the blue REPAIR button in qFlipper
If your Flipper is not detected in qFlipper, please make sure that the USB-C cable that is used supports data transfer. To rule out any possible issues with the cable, we highly recommend using the USB-C cable supplied with the device. Additionally, we recommend connecting the USB cable directly to one of the USB ports on the motherboard, without the use of any adapters or hubs.
If this method of activating the DFU bootloader is not effective, the following steps can be performed instead:
- Disconnect the USB and any external power supplies from your Flipper
- Hold the BACK button for 30 seconds to force a hardware power reset
- Hold the LEFT and BACK buttons simultaneously for 3 seconds to force a reboot
- Press and hold the OK button
- Plug in the USB cable into your Flipper, while still holding the OK button
- Repair through qFlipper
MicroSD card not detected or unable to mount
If the microSD card is not detected by the device, or if it is detected but unable to mount the microSD card, it is important to make sure that the microSD card is compatible with the Flipper Zero. Flipper Zero makes use of the SPI interface, and on many low-quality microSD cards the SPI mode is either poorly implemented or not supported. We recommend using high-quality, branded microSD cards such as SanDisk, Kingston and Samsung.
If the microSD card is detected, but your Flipper Zero shows an error stating "Mounting SD card failed", the card might need to be formatted first. This can be achieved by opening the Settings menu, going into Storage, and selecting Format SD card.
If you have confirmed that the MicroSD card in use is a high-quality card but are still experiencing problems, it is possible that the MicroSD slot on the device has gotten dirty or damaged. In this case, we recommend carefully cleaning the microSD port with compressed air or a toothpick.
Device charges over USB but is not detected by qFlipper
If your Flipper still charges over USB but is not detected by qFlipper, it is likely that the cable that is being used does not support data transfer. For this, we recommend using the USB-C cable that was supplied with the device.
If your device is still not being detected and you have confirmed that the USB-C cable used supports data transfer, it is likely that the USB-C port on the device has gotten dirty or damaged. In this case, we recommend carefully cleaning the USB-C port with compressed air or a toothpick.
Device no longer works over USB
If your Flipper is not detected by qFlipper and no longer takes a charge over USB, it is likely that USB-C port on the device has gotten dirty or damaged. In this case, we recommend carefully cleaning the USB-C port with compressed air or a toothpick.