Unable to get Board details under board manager

[sureshsarat]

Arduino 1.6.5r5 installed.
I used all possible values http://arduino.esp8266.com/stable/package_esp8266com_index.json &http://arduino.esp8266.com/staging/package_esp8266com_index.json.
I am getting signature verification failed. File ignored.ESP8266 not showing up in Arduino

FYI
NODEMCU DEVKIT 1 used

[sureshsarat]

Closing as this post has the solution http://arduino.esp8266.com/staging/package_esp8266com_index.json vanished #1051

Using Ip ADDRESS

[sureshsarat]

Ok Though I am able to get listing in Boards Manager installation fails with CRC error.

[Links2004]

duplicate of: #1051

check workaround here:
#1051 (comment)

for CRC error check:
#1051 (comment)

will close this to track the problem in one issues.