BLAUPUNKT ACR4250
uP    : 47C847F-G434
        9934051100
EEPROM: 24C016  (ST) (24C01,no WriteProtect pin 7 to +Vcc)
7 645 511 310
BP5511V2151786 (original code 6252)

4250.bin   code 1234
4250nc.bin without code (code 6252)

Code is on address 05h and 06h
in form : h1 h2 h3 h4

00   |00|01|02|03|04| 05  | 06  |07|08|09|0A|0B|0C|0D|0E|0F|
00   |--|--|--|--|--|h2_h1|h4_h3|--|--|--|--|--|--|--|--|--|


Timer is on address 04h
                         00 no wrongs entry
                         01 one wrong entry

Blocking is on address 03h
                         00  without code
                         04  no blocked (ask for code)
                         10  blocked

 Deactivate the code: press 1&4 then switch on, enter code
