Board doesn't do anything after upload, not even the Serial.print

Hi everyone,
I have the error with the Arduino D1 R1 board with chip ESP8266EX. Everything is ok while compiling and uploading, there are no errors, but when I upload it, it does nothing. It just writes "⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮⸮" in serial monitor, and nothing else. Here is the upload log:

esptool.py v2.6
2.6
esptool.py v2.6
Serial port /dev/cu.usbserial-1420
Connecting....
Chip is ESP8266EX
Features: WiFi
MAC: 5c:cf:7f:2c:bc:0c
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 278944 bytes to 201352...

Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 278944 bytes (201352 compressed) at 0x00000000 in 5.0 seconds (effective 444.8 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

I think that the error is in this: There is the line "Changing baud rate to 460800", even if I set the Serial.begin to 115200. Everything worked perfectly until today. I hope someone can help me.

Do you think that it would help to see your code ? (HINT)

460800 is the upload speed and has nothing to do with the baud rate used by the sketch.
what sketch do you upload?
is something wired to pins of the board?