Arduino pro mini has stopped flashing, how can I restore it?

Question

Firmware

I bought 2 Chinese pro minis, flashed through nano rx-rx tx-tx and closed gnd-rst on nano, played with rf433 and virtualwire, data transfer was bad, found a newer radiohead library, flashed pro mini and it stopped flashing and responding at all. I try through arduino as isp, gives out:

Sketch uses 1,030 bytes (3%) of program storage space. Maximum is 30,720 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x15
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x15
 
avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x14
 
avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x01
avrdude: stk500_initialize(): (a) protocol error, expect=0x14, resp=0x10
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.
 
avrdude: stk500_disable(): unknown response=0x12
Problem uploading to board.  See <a href="http://www.arduino.cc/en/Guide/Troubleshooting#upload" title="http://www.arduino.cc/en/Guide/Troubleshooting#upload" rel="nofollow">http://www.arduino.cc/en/Guide/Troubleshooting#upload</a> for suggestions.

Changed the speed in the boards.txt file to 19200 as in the sketch. Tried to press reset before flashing, nothing helps.
arduino ide 1.6.7 Tell me
how can I restore the performance of the boards?

Answer 1

Actually, these boards are cheap, but they are stitched and work depending on the phase of the moon.