First of all, apologize for my low level of English that may make it difficult to understand my problem
Until I changed the Movistar router to the new 2.4G + 5G dual band, the Wi-Fi connection worked perfectly with the ESP8266 module.
Well, it stopped working and I thought that the module had failed so I bought 2 more.
The first time I connect them via USB they are perfectly recognized as "ESP_nnnnnn" network (each module its name).
After performing the procedure of loading bin files, they are no longer visible as a Wi-Fi network.
This has happened to me with the 2 modules and now there is no way to see them as a network so I can not connect with them and configure them.
Is it possible that the bin files are obsolete and should load some more updated?
Thank you