I then advise, to change the title to "Need help to desaster recover a Dynalink dl-wrx36", so the right people notice your thread.
OpenWRT is supported on roughly 2000 devices, and each device has a slightly different (and device-specific) recovery procedure. Only a fraction of people in the forum here are experts for specific devices. That is why I would recommend to be as specific as pssible on the title. There is no generic uboot recovery procedure.
The documentation refers to Dynalink DL-WRX36 Askey RT5010W IPQ8072A technical discussion - #398 by luaraneda to recover,
does that help in any way?
By the way, I don't have that particular device. But I did notice that the info you have put in the thread will not be of help to proceed.
This forum does not really work like a support hotline, where someone will go through prepared checklists and guid you along, but rather you need to describe your situation, what steps you have tried so far and questions that you have to understand documented instructions.