ESP8266 Community Forum

i know that it may take some seconds after flashing reaches "100%", so i did wait.
But even waiting for 4 minutes did not help.
Using here 6 WEMOS D1 Minis. 3 of them starting OK immediatelly after flashing - other 3 do not.
All flashing with ESP-Basic V3 is ending with the error messages / checksum errors.

I see only one obvious difference between them:
OK with WEMOS D1 MINI, MODEL ESP8266MOD ; VENDOR AI-THINKER
NOT OK: WEMOS D1 MINI, MODEL ESP8266MOD; VENDOR HYSIRY
Both seem to have ESP-12F-Modules.

I have the same problem with 3 NODEMCU-Clones LOLIN V3 - But Flashig those with LUA-Software using other flashers is OK.

Have you tried choosing different memory sizes in the flasher tool?

Just a thought
Dwight

Yes, I tried that too: no change

Just used other commandline-flasher with espbasic-bin-file: same result

All the D1-modules work fine, when I flash for example AI-Thinker-AT-Firmware1.54.