# Program the firmware for 6UL

**URL:** <https://forums.digi.com/t/program-the-firmware-for-6ul/18787>\
**Category:** Linux\
**Tags:** imx6ul\
**Created:** [October 9, 2017, 8:55am UTC](https://forums.digi.com/t/program-the-firmware-for-6ul/18787 "2017-10-09T08:55:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vasilyvs](https://avatars.discourse-cdn.com/v4/letter/v/bc79bd/32.png) [@vasilyvs](https://forums.digi.com/u/vasilyvs)\
**Post date:** [October 9, 2017, 8:55am UTC](https://forums.digi.com/t/program-the-firmware-for-6ul/18787/1 "2017-10-09T08:55:40Z")

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After I install the firmware into the NAND and rebooting the device I have got the message: “ERROR: Did not find a cmdline Flattened Device Tree  
Could not find a valid device tree”. I have tried erase the flash memory by command “erase” and reinstall the firmware - the same result. My device is DIGI iMX6UL W164902075153. Firmware 8200400\_A from P.1 [https://www.digi.com/resources/documentation/digidocs/90001514/#task/yocto/t\_program\_firmware\_yocto.htm%3FTocPath%3DDigi%2520Embedded%2520Yocto|Get%2520started|\_\_\_\_\_3](https://www.digi.com/resources/documentation/digidocs/90001514/#task/yocto/t_program_firmware_yocto.htm%3FTocPath%3DDigi%2520Embedded%2520Yocto%7CGet%2520started%7C _____ 3). Thanks!

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**Author:** ![LeonidM](https://avatars.discourse-cdn.com/v4/letter/l/d26b3c/32.png) [@LeonidM](https://forums.digi.com/u/LeonidM)\
**Post date:** [October 10, 2017, 11:25am UTC](https://forums.digi.com/t/program-the-firmware-for-6ul/18787/2 "2017-10-10T11:25:14Z")

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You have SBC PRO, you are using firmware for SBC express.  
Your firmware is here:  
[https://www.digi.com/resources/documentation/digidocs/90001547/#task/yocto/t\_program\_firmware\_yocto.htm](https://www.digi.com/resources/documentation/digidocs/90001547/#task/yocto/t_program_firmware_yocto.htm)  
Also your documentation is there too.