It took a couple of days only to get response. It was inmediately considering I sent the email last Saturday Aug 7th.
They just replied.....
"....Mon., Aug 9, 2021 8:36, Lilliput (OWON) <info@owon.com.cn> wrote:
Hi Julio,
The HDS242S with your version can only upgarde to 1.7.0. ...do you like to upgrade? ...."
I said yes and next day I received a new email with the firmware file and a brief explanation how to do it. There was not a log file with the history of fixes or improvements, I got just the "Scope.upp" file
The upgrade process took me about 5 minutes (3min to read the indication, connect the scope via USB and copy the file into the scope memory, 1min since reboot to complete the upgrade, 1min to search how to change the language back to english instead default chinese)
Tray to email them again