...if you need to change language (spanish) you not needed to fullflash your phone (using Joker or Freia). To obtain fullflash with your language and with your flash IC (A51 phone use two type of flash chip) is too hard.
Just go to http://eh.student.utwente.nl/~landy/index.php?dir=A52_A52M/
user: mobile
password: elibom
download file "A52_090507w.zip" and upgrade firmware using "normal" serial data cable....
dagos