(OTA ZIP Download) ATT One M9 receiving a new Android 5.1 Lollipop update, build 2.6.502.18

Jesse Han   2015.09.07 8:23   Jesse Han  

To ATT HTC One M9 users, the 2.6.502.18 update is not the first Android 5.1 Lollipop update. As you know, it is the 2.6.502.16 update, which was rolled out two months ago.

So, the new 2.6.502.18 update is a small update, but this is an important update, because it fixes stagefright vulnerability.

The update is rolling out via OTA, if you have not yet received it, thanks XDA krazyace35, here is the OTA ZIP file.

OTA ZIPs Download Directly

  • 2.6.502.18_OTAPkg.zip

Once the OTA.zip firmware file is downloaded, you can manually flash it to your ATT One M9, but you require a stock recovery.

Flash OTA ZIP Firmware File
  • Rename the OTA.zip file you downloaded to update.zip
  • Copy update.zip to One M9’s internal memory
  • Boot your One M9 to Recovery mode
  • apply update from internal storage
  • Locate update.zip