ESP8266 Community Forum

I'd like to try OTA firmware updates but I'm having trouble building an image. When I type this command:



I get this error:



Does anyone know of a fix for this? Am I typing the make command wrong?

Okay, I changed the Makefile to use 15 instead of 0xf and now it seems to work. Looks like you can't set ESP_FLASH_FREQ_DIV to 0xf if you want to make an OTA image.

dbetz wrote:Okay, I changed the Makefile to use 15 instead of 0xf and now it seems to work. Looks like you can't set ESP_FLASH_FREQ_DIV to 0xf if you want to make an OTA image.

With this change and another minor change to add 15:80m to this code from Makefile:

I can successfully generate a .ota image and I can load it using the "upgrade the firmware" link on the esp-httpd home page but when it reboots the new image is not loading. Is there something else I need to do to switch over to the new image?

dbetz wrote:

dbetz wrote:Okay, I changed the Makefile to use 15 instead of 0xf and now it seems to work. Looks like you can't set ESP_FLASH_FREQ_DIV to 0xf if you want to make an OTA image.

With this change and another minor change to add 15:80m to this code from Makefile:

Code: Select allESPTOOL_FREQ=$(call maplookup,$(ESP_FLASH_FREQ_DIV),0:40m 1:26m 2:20m 0xf:80m 15:80m)


I can successfully generate a .ota image and I can load it using the "upgrade the firmware" link on the esp-httpd home page but when it reboots the new image is not loading. Is there something else I need to do to switch over to the new image?

Fyi I fixed the 15/0xf thing in Git.

Wrt the ota failure: What is your ESP_SPI_FLASH_SIZE? Can you try what happens when you set it to 1024? I've seen some weirdness in the bootloader with any value other than that.