How to go back to linux from WEC7 in Colibri iMX6

How to go back to linux from WEC7 in Colibri iMX6? I am using Toradex Bootloader 1.1 beta 4

What is wrong with the following description on our developer website?

I don’t have u-boot. I have Toradex Bootloader 1.1 beta 4. I cannot load u-boot even with hardware recovery. I tried several modules but with same disappointing results. Details are as follows:

https://www.toradex.com/community/questions/9802/flashing-u-boot-in-imx6-from-toradex-bootloader-11.html