[igi]

add class to file C:\Program Files (x86)\Calibre2\Lib\site-packages\calibre\devices\nokia\driver.py
class E52(USBMS):

name = 'Nokia E52 device interface'
gui_name = 'Nokia E52'
description = 'Communicate with the Nokia E52'
author = 'David Ignjic'
supported_platforms = ['windows', 'linux', 'osx']

VENDOR_ID = [0x421]
PRODUCT_ID = [0x1CD]
BCD = [0x100]


FORMATS = ['mobi', 'prc']

EBOOK_DIR_MAIN = 'eBooks'
SUPPORTS_SUB_DIRS = True

VENDOR_NAME = 'NOKIA'
WINDOWS_MAIN_MEM = 'S60'

and add
C:\Program Files (x86)\Calibre2\Lib\site-packages\calibre\customize\builtins.py

from calibre.devices.nokia.driver import N770, N810, E71X, E52


plugins += [
E52