# Installing TinyUF2 bootloader on RT10xx Microcontrollers

## Install the UF2 Bootloader

![](https://cdn-learn.adafruit.com/assets/assets/000/101/015/medium800/microcontrollers_Screenshot_2021-03-25_11-53-55.png?1616691244)

At Adafruit, we really like the UF2 bootloader for installing software like CircuitPython on microcontrollers. UF2 allows you to drag-and-drop UF2 files and has a nice LED/NeoPixel indicator. No special DFU/firmware-updater software is required and you can use any computer to program a UF2-bootloader device. Once installed, you can access the UF2 bootloader by clicking the reset button twice in a row.

But what do you do with a fresh chip, or if the UF2 bootloader on your device has become corrupted? This guide will walk you through the steps of installing the UF2 bootloader using the ROM bootloader built into all RT10xx chips using software called **sdphost** or **sdphost.exe** on your PC, Mac, or Raspberry Pi.

Warning: 

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- [Next Page](https://learn.adafruit.com/installing-the-uf2-bootloader-on-nxp-imx-rt10xx-microcontrollers/enter-rt-rom-bootloader.md)

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Get ready for our fastest Metro ever - the NXP iMX RT1011 microcontroller powers this board with a 500 MHz ARM Cortex M7 processor. There's 8 MB of execute-in-place QSPI for firmware + disk storage and 128KB of SRAM in-chip, plus a WiFi co-processor using an on-board ESP32...

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