ESP8266 Community Forum

I ended up in a boot loop, I have done so multiple times already, but it always got solved by simply flashing nodemcu to the esp8266 again, but this time I am out of luck.

At 9600 baud I get the normal welcome, followed by some garbage



At 115200 baud I get this

No errors from nodemcu running into a problem with my code, it just reboots. Any suggestions to what I can try?

It's init.lua which is causing the reboot by WDT?

devsaurus wrote:It's init.lua which is causing the reboot by WDT?

I have no idea. Before I have been able to just flash NodeMCU again, and then I could upload new code. This time it keeps doing it, not sure if it store the init.lua after flashing NodeMCU now.

How do I make sure the lua code I send to it, has been removed?

Re-flashing the same firmware will invalidate the SPIFFS as well ... most of the time. I've also seen some rare cases where the filesystem survived this. Easiest way would be to flash a different (older, newer) version, do a file.format() there and re-flash your target firmware.
In the end, you just need to ensure that the old SPIFFS header gets overwritten somehow. Technically, it would be enough to flash blank.bin to the slot where this header is located in your case. I don't have the formula at hand, but it would be something like


Example: 0x62EA2 is last address used by FW, then fa = 0x64000. Flash blank.bin at 0x64000, check booting. If not successful, flash at 0x66000 and so on.

Hope this helps.