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Sony Ericsson J110/J120

This is another ODM phone model based on TI Calypso (most likely, by Chi-Mei). Not yet supported.
Both J110 and J120 are identical, except that the J120 has an FM receiver.

Specifications

https://www.gsmarena.com/sony_ericsson_j120-1843.php

  • GSM 900/1800
  • 99 x 44 x 17 mm, 75g
  • STN 65k, 96 x 64
  • 900mAh Li-Ion battery (BST-37)

Hardware

SE-J110i-PCB.jpg SE-J120i-PCB.jpg

Large versions: SE-J110i-PCB.jpg, SE-J120i-PCB.jpg.

  • DBB: D751749ZPH (well-known Calypso Lite)
  • ABB: TI T3025BZQW (Iota)
  • RF TRX: Si4210 (Silabs Aero II) - we don't support it
  • RF PA: SKY77318-12 (similarly to SE K200)
  • MX92U832ZCG (audio?)

Flash

  • INTEL J030W[0D]YTQ2 (flash+RAM MCP)
  • INTEL 28F320W18T (1.8 Volt Wireless Flash Memory, 4 MByte)

Flash dumps

Serial cable

J110/J120 has the standard Sony Ericsson Fastport connector. Refer to SonyEricssonJ100i for more details.

Bootloader

Similarly to Sony Ericsson K200i and unlike Sony Ericsson J100i, J110/J120 has the boot ROM (see CalypsoRomloader) enabled.

Stock firmware notes

Below are some notes related to the stock SE's firmware.

AT Modem mode

It's not yet known how to get access to the AT command interpreter.
Some AT commands can be found by running strings on the firmware dump.

$ strings J120i_R1A007_CXC1250845_Main.bin | grep "AT[*+]" 

MMI codes

NOTE: for some codes you need to press the "green" (call) button.

  • Standard SE codes:
    • -> * <- <- * <- * - service info and tests;
    • <- * * <- - lock status;

Found in the firmware dump:

$ strings J120i_R1A007_CXC1250845_Main.bin | less
...
*#06#
F*#**837#
*#**785#
*#**664#
*###664#
*#**364#
*#**364*564#
*#**672#  -- "OQC" menu (service tests)
*#**372#  -= "FQC" menu (service tests/info)
*#**2263*0#  -- BAND?
*#**2263*1#
*#**2263*2#
*#**2263*3#
*#**2263*4#
*#**735*0#
*#**735*12#
*#**735*13#
*#**833*2#
*#**833*4#
*#**833*7#
*#**833*3#
*#**778377#
*#**464851#
*#**324#
*#**6360#
F*#**6361#
F*#**6362#
F*#**6363#
F*#**6364#
F*#**266*0#
*#**266*1#
*#**277378#  -- ASSERT?
*#**636#
*#**636*0#
*#**636*1#
*#**84637#
*#**767#
*#**3428*0#
*#**3428*1#
*#**3428*2#
*#**778337#
*#**25276#
*#**62683#
*#**3646633*0#
*#**3646633*1#
*#**678257#
*#**33284#  -- DEBUG

https://www.dcode.fr/t9-cipher is quite useful for guessing the purpose.

Files (2)
SE-J120i-PCB.jpg View SE-J120i-PCB.jpg 2.66 MB fixeria, 12/01/2023 06:37 PM
SE-J110i-PCB.jpg View SE-J110i-PCB.jpg 3.74 MB fixeria, 12/14/2023 11:11 AM

Updated by fixeria 2 months ago · 12 revisions

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