ESP8266 Community Forum

- Wed Jun 22, 2016 12:23 am #49572 I might have stumbled onto a solution, but I am a total newb to the esp. I thought I had a bad unit or that I bricked my esp-8266, but I was persistent.

I too sent the dreaded AT+IPR=9600 command and voila, I had a postage stamp sized paper weight. After a couple hours of searching I came across this (http://catcatcat.d-lan.dp.ua/wifi-esp8266-esp-202-esp-12f/) page in Russian (use google translate) which is a tutorial for flashing the ESP 8266 (to SDK 1.5.4), with one small difference from most other tutorials, a call to put the blank.bin to address 0x7E000. I gave it a whirl and nothing seemed to change, until I re-flashed once more like normal and boom, the ESP was back in business.

Beginner luck?
Totally wrong about this?

I am willing to accept any of these, but it somehow worked for me.

Good luck to the next newb who sends that IPR command!

Below is paraphrased from the referenced page:
esp_init_data_default.bin -->0xFC000
Optional file vnem are placed by default RF settings

blank.bin--> 0x7E000
Initialize the field of flash memory user settings

blank.bin-->0xFE000
Initialize the flash memory area of ​​the system parameters

boot.bin-->0x00000
\ bin

user1.1024.new.2.bin-->0x01000
\ Bin \ at \ 512 + 512

- Tue Apr 18, 2017 5:57 am #65048 I also had to upgrade / update my ESP 8266 ESP-12.
But I had to put blank.bat on three different places:
0x7E000
0xFE000
0x7C000

I also had to connect:
GPIO0 to LOW
GPIO2 to HIGH
GPIO15 to LOW

- Tue Apr 18, 2017 6:01 am #65049 I also had to upgrade / update my ESP 8266 ESP-12.
But I had to put blank.bat on three different places:
0x7E000
0xFE000
0x7C000

I also had to connect:
GPIO0 to LOW
GPIO2 to HIGH
GPIO15 to LOW