The clips and probes used with the EZP2019 are often mechanically weak. The (the black clip with 8 wires) is notorious for losing contact. Even a microscopic vibration can disrupt the connection to pin 1 (CS - Chip Select) or pin 8 (VCC - Power).
Second, the user should scrutinize the software settings. It is advisable to double-check the chip manufacturer and model number printed on the chip surface. If the exact model is not listed in the software, searching for the specific manufacturer's ID is often more reliable than choosing a generic counterpart. flash check error address 0h ezp2019