Same Problem For Me But Model Is K332 Code:
1. Power Off Phone , Remove battery , Insert back
2. PRESS and HOLD VOLUME UP KEY!
3. Insert USB cable, wait until Download mode screen will appear
Wait for phone...
Connection opened successfully!
Waiting for loader ...
Handshake passed!
Collect info...
Prepare passed, mode 0x01
Boot done!
Format UserData
Format Cache
Format done
Erase sFRP#3 Ok!
Reconnect Power/Cable!
Done!
Elapsed: 00:00:49