Trying to Jailbreak KT4 brand new with firmware 5.11.0

Hi,

I have a brand new Kindle Basic 3 (2019) / KT4 with Serial: G0910L... that I just unpacked, and it’s running firmware 5.11.0 and I would like to jailbreak it.

I have moved the Merchant.zip into the root folder, and searched for ;merchant after unplugging the Kindle, but it does nothing. Why is it not working?
The Kindle is brand new, I haven’t registered it or connected it to the Wifi yet.

Thanks in advance