---
title: How do I update the firmware for my Controller (TCS-1, HCS-1, NFS-1, CDA-1)?
description: Thinkgrow and Trolmaster Knowledge Base
---
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# How do I update the firmware for my Controller (TCS-1, HCS-1, NFS-1, CDA-1)?
Firmware Update: Update a new firmware to fix bugs or/and add new functions to the unit. Visit our website to find out update version [https://www.trolmaster.com/Products/FirmwareUpdate?class=Support](https://www.trolmaster.com/Products/FirmwareUpdate?class=Support)
1. prepare a micro SD card with less than 32 GB in FAT32 format and the latest firmware ([https://www.trolmaster.eu/firmware-update](https://www.trolmaster.eu/firmware-update))
2. power up the controller
3. insert the SD card
4. press Enter and navigate to the System Menu
5. then enter System Reset in the System Menu
6. choose Firmware update and follow the instructuons on the screen
7. then the controller restart and the update from the SD card is installed
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