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-
- Cellular Phone File - #1
- written, created and tested
- by Count Zero
- {CHiNA}
-
-
- This simple (?) mod has been tested on the:
-
- UNIDEN CS-1000/1200 Series Cellular
- MPPS Red 12/13 (Pretty much same as above model)
-
- and has proven effective for over four months running. However, (yes, here
- comes the big disclaimer...)
-
-
- ----------------------------------------------------------------------------
- D I S C L A I M E R
-
- CHiNA and its members claim no responsibility for irresponsible
- use of the information and designs contained herein. This file is being
- presented on a "for knowledge's sake" basis to the members of the modemming
- community at large. Any use of this file except for educational and
- operational efficiency purposes is hereby forbidden.
-
- So there!
-
- The Conflict * Maxwell Smart * Count Zero * Monalisa Overdrive * The Viper
- & Rubiks the Cube
- ----------------------------------------------------------------------------
-
- What this mod does is prevent a correct unit identification code (called UIC
- from here on) from being transmitted. The messages sent to and from the
- local transmittal stations should be surpisingly familiar to any one of our
- readers.
-
- But here's the mod and a bit of theory that I used to discover it.
-
-
- (1) Your individual UID is "burned into" a simple 8x8 EPROM that may
- be erased and "re-written" to accomodate a new code. This may be
- difficult, and in fact IS difficult because you will have a lot of
- trouble finding where it begins and ends.
-
- (2) The contact sequence when you first power up the unit (which usually
- goes on while the handset's "NO SERVC" or "SVC UNAVAIL" is lit) goes
- like this:
-
- YOU A0 A0 A0 A0 A0 A0 A0 A0
- IT ACK or NAK (up to a max of 4 times)
- YOU 12 3A + UID
- IT 12 3A + UID
- YOU ACK or NAK
- IT 00 00 00 or FF FF FF
- (Available / Not Available)
-
- The best route to handle this is to FORCE your system to ACK when asked
- if a false code is its code.
-
- The following should outline the procedure:
-
- You will need:
-
- * A Temperature-Controlled Soldering Iron
- * Rosin-Core Solder
- * Solder wick (for you slobs)
- * Pair of Diag-Cutters (or wire-cutters)
- * About 15 minutes of time.
-
-
-
- Step 1 - Unplug the unit and allow to sit for at least a half hour to allow
- all capacitors to become completely discharged. Also, as a
- precaution, "discharge" yourself on a common ground (no woolly
- socks, ok?) Remove cover from "handset" portion (yes, the one with
- the keypad)
-
- Step 2 - Locate the indicated EPROM should have a serial number that begins
- with an "IA" prefix and will be noted on the circuit board as
- "IC4" or "IC5". Given this knowledge and the following picture:
-
- +5v -!-------!- GND
- -! IA... !- RST
- -! !-
- +1.5v -! !-
- IC4 D1 -! !- D5
- D2 -! !- D6
- D3 -! !- D7
- D4 -!-------!- D8
-
- ...you should be able to find it.
-
- Step 3 - Cut the D1 pin and pull completely back from the motherboard at
- a 90 deg angle. This will not interfere with your system messages
- but will disable any "odd number" from being sent! Thus your code
- alone will come out false.
-
- Step 4 - Locate the following components:
-
- R14 - Resistor #14 1.5 ohm
- Cut and jumper with solder and small gauge wire
-
- R15 - Resistor #15 3.5 ohm
- Cut and replace with 1.5 ohm from previous step
-
- C22 - Capacitor #22
- Cut and leave out!
-
- Now make sure you have no "cold" joints and all soldered points are secure!
- If you are going to screw up at any point in the procedure, this will be it.
-
- Make sure to double-check your work! I don't want anyone weeping to me
- because their handset if now fused to their right ear!
-
- Step 5 - (explanation of Step 4)
- This step "forces" the system to send an ACK (by routing the NAK
- trigger through ACK output) and thus verifying the bogus code.
-
- Step 6 - Reassemble handset.
-
- Just a hint, do NOT go overboard on your calls as these calls are not free,
- they are just being billed to another person's code (if it is a legit code)
-
- Again, re-read the disclaimer.
-
- Step 7 - Operate the unit normally.
-
- TROUBLESHOOTING:
-
- Problem Solution
-
- * NO POWER Be sure all power leads were reconnected
- correctly when you put the handset back
- together.
-
- * STILL GETTING CHARGED FOR Cut the correct pin from the IC!
- CALLS If still getting charged, cut D2 as
- well though this may be risky.
-
- * CALLS "CAN'T BE COMPLETED" Recheck mods made in Step #4.
- AS DIALED or SYSTEM
- UNAVAILABLE
-
-
-
-
- Well, this should get you started. A few notes before I go:
-
- Thanks to The Conflict (for the inspiration), Maxwell Smart (for that "Smart"
- report on Operation Wolf), Monalisa Overdrive (for letting me call him
- repeatedly while testing this mod out!), Lord Blix (for the cracking help when
- I needed it), The Viper (because he wants to be thanked)
-
- Call on of our CHiNA nodes today for the latest in "knowledgable" text files
- unlike other groups...
-
-
- OVER AND OUT ---------> COUNT ZER0 !
-
-
-
-
- +- Shamelessly Leeched from The Mudd Club -+
- Press a key...
-
-
-
-
-