I worked with foxconn on one of those type of test jig for a tablet type of product before. They are custom make for the PCB, but very nice to have. You can

I worked with foxconn on one of those type of test jig for a tablet type of product before. They are custom make for the PCB, but very nice to have. You can reprogram the PCB in about 1 minute, the PCB is is perfectly align to the Jig and the test pins line up with the JTAG and you can program EEPROM, or EMMC it from the JTAG software.