Need stock firmware for a ZTE Z820 Obsidian for Tmobile

[rva33145]

I need help finding the stock firmware for a ZTE Z820 Obsidian that i can download onto an SD card and use it to recover my pbone. It is stuck in a bootloop. Any advice? Already tried factory reset and cache clearing. No luck.

 

[Leakite]

Just in case someone still needs this:-

Whichever one you need: sdcard upgrade package or Flashtool firmware, you can download from this link.

Leave a comment here if you need any assistance.