Vodafone GX20 unlock problems. Nothing works for me. - GSM-Forum

mcmac · 08-12-2004, 11:08

I bought a Vodafone Sharp GX20 abroad and it's giving me a "Invalid Network SIM" error and freezes the phone (can only call SOS). I've tried to unlock it using all the methods I have found but none have worked. I have a GX10/20 serial datacable that should work fine. All pins connected.

santelgx20 gives "Initialization Error" or similar, Gxx unlocker does not work. I've also tried to flash it with FreaX/Unisoft flashers but they give a "Sync Byte" error and do not work.

Sharp Unlocker 3.1 is the only one that works. The process went fine but it didn't unlock the phone. Still the same "Invalid Network SIM" error.

Sometimes when I power the GX20 on, it does not give a "Invalid Network SIM" error but a "Emergency only" notification. I can use the menu fine in this mode. If I go to the Network Settings and try to manually choose my network, it searches for the networks and displays them correctly. If I choose my own network it gives a "Network Unavailable" error and I have to default to Automatic. If I do this the GX20 goes back into the "Invalid Network SIM" mode and freezes the phone.

I have used the code *01763*6371# to enter the MEP Security menu. All the settings there are set to Disabled (SIM, Network, Network Sub, Corp...).

I do not know if the phone is IMEI blacklisted but I doubt it. I would hope it would give a clearer notification about it.

Software version is : A02-005-0147-GX20

Running out of ideas here. All help is appreciated.

FreaX · 08-12-2004, 12:47

Quote:

Originally Posted by mcmac

FreaX/Unisoft flashers but they give a "Sync Byte" error and do not work.

Do you press the red button on you phone and keep it pressed?

mcmac · 08-12-2004, 12:52

Quote:

Originally Posted by FreaX

Do you press the red button on you phone and keep it pressed?

Yes. I keep the power button down until the flasher gives me the error, but the GX20 stays dark. It doesn't power up like normal just stays dark.

HighWay · 08-12-2004, 13:01

Hello

I have the same problem, but my phone was flashed successfuly
(Vodafone GX20)
when press power buton the display only blinking .
I was tryed with different flashes but the problem still exist

BR

Hw

hakima · 08-12-2004, 13:33

For me thats works fine

Pls keep and hold untill erasing in progress

WBR

mcmac · 08-12-2004, 13:45

Quote:

Originally Posted by hakima

Pls keep and hold untill erasing in progress

I can keep the power button down as long as I like but it does nothing. Just stays dark. A MessageBox named DownLoader pops up with "Unable to receive Sync Byte." notification. Press OK and it takes me back to the main window.

FreaX · 08-12-2004, 18:13

Can it be, that you press the button to early?
Press it when the flasher says it!

mcmac · 08-12-2004, 18:17

Quote:

Originally Posted by FreaX

Can it be, that you press the button to early?
Press it when the flasher says it!

I start pressing when it tells me to "Press Power Button !". Right when it comes up, wait 5 seconds after it tells me to then start pressing... Doesn't matter - GX20 stays unpowered. When the "Unable to receive Sync Byte" pops up I stop pressing and then press the power button again and it powers on like normal.

FreaX · 08-12-2004, 21:11

Stupid question, but I had nearly the same problem, and the solution was to charge the battery, because it ws emty!
I your battery full?

mcmac · 08-12-2004, 21:17

Quote:

Originally Posted by FreaX

Stupid question, but I had nearly the same problem, and the solution was to charge the battery, because it ws emty!
I your battery full?

Yes. The battery is fully loaded.

**GSM MIND** · 08-12-2004, 21:52

hello fren

if the battery is full charged try to unlock again your phone with 3.1 unlocker it works reply me on this solution

unlockclips.com · 08-12-2004, 22:02

The other option is when you have the xxxx up on the screen press 1 to get test menu up press 99 and then 3. This will unlock the phone by formatting data.

mcmac · 08-13-2004, 06:44

Quote:

Originally Posted by khalid latif

if the battery is full charged try to unlock again your phone with 3.1 unlocker it works reply me on this solution

I have tried the Sharp Unlocker 3.1 about 10 times. Always the same result.

mcmac · 08-13-2004, 06:56

Quote:

Originally Posted by unlockclips.com

The other option is when you have the xxxx up on the screen press 1 to get test menu up press 99 and then 3. This will unlock the phone by formatting data.

Pressing 1 indeed did give me a GX20 Diag menu. I did what you said and it gave me two E_xxxx notes with OK. So the process seemed to go fine. I powered down and restarted. No change. It is still locked.

Now I have another problem after this. Sharp Unlocker 3.1 no longer gives me the XXXX on screen when it asks to power on. Instead it powers on like normal.

mcmac · 08-13-2004, 08:47

Seems like not getting the XXXX was a temporary glitch as I now get it. I did the procedure again and it gave me the same info.

DIAG_FORMAT START
DIAG_FORMAT OK

Nothing changed. Still get the same "Invalid Network SIM" and frozen phone.

I have tried 3 different SIM cards (3 different operators), tried the programs on 3 different computers, win98 and winxp, com1/com2, different com settings.. Same results.

08-12-2004, 11:08	#1 (permalink)
mcmac Junior Member Join Date: Aug 2004 Posts: 8 Member: 77410 Status: Offline Thanks Meter: 0	Vodafone GX20 unlock problems. Nothing works for me. I bought a Vodafone Sharp GX20 abroad and it's giving me a "Invalid Network SIM" error and freezes the phone (can only call SOS). I've tried to unlock it using all the methods I have found but none have worked. I have a GX10/20 serial datacable that should work fine. All pins connected. santelgx20 gives "Initialization Error" or similar, Gxx unlocker does not work. I've also tried to flash it with FreaX/Unisoft flashers but they give a "Sync Byte" error and do not work. Sharp Unlocker 3.1 is the only one that works. The process went fine but it didn't unlock the phone. Still the same "Invalid Network SIM" error. Sometimes when I power the GX20 on, it does not give a "Invalid Network SIM" error but a "Emergency only" notification. I can use the menu fine in this mode. If I go to the Network Settings and try to manually choose my network, it searches for the networks and displays them correctly. If I choose my own network it gives a "Network Unavailable" error and I have to default to Automatic. If I do this the GX20 goes back into the "Invalid Network SIM" mode and freezes the phone. I have used the code 017636371# to enter the MEP Security menu. All the settings there are set to Disabled (SIM, Network, Network Sub, Corp...). I do not know if the phone is IMEI blacklisted but I doubt it. I would hope it would give a clearer notification about it. Software version is : A02-005-0147-GX20 Running out of ideas here. All help is appreciated.

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08-12-2004, 13:01	#4 (permalink)
HighWay Freak Poster Join Date: Jan 2000 Location: Bulgaria Age: 58 Posts: 169 Member: 848 Status: Offline Thanks Meter: 0	Hello I have the same problem, but my phone was flashed successfuly (Vodafone GX20) when press power buton the display only blinking . I was tryed with different flashes but the problem still exist BR Hw

08-12-2004, 13:33	#5 (permalink)
hakima No Life Poster Join Date: Jul 2003 Posts: 2,895 Member: 33804 Status: Offline Thanks Meter: 22	For me thats works fine Pls keep and hold untill erasing in progress WBR

08-12-2004, 18:13	#7 (permalink)
FreaX Freak Poster Join Date: May 2004 Location: http://sharp.x-mc.net Age: 37 Posts: 190 Member: 65953 Status: Offline Thanks Meter: 0	Can it be, that you press the button to early? Press it when the flasher says it!

08-12-2004, 21:11	#9 (permalink)
FreaX Freak Poster Join Date: May 2004 Location: http://sharp.x-mc.net Age: 37 Posts: 190 Member: 65953 Status: Offline Thanks Meter: 0	Stupid question, but I had nearly the same problem, and the solution was to charge the battery, because it ws emty! I your battery full?

08-12-2004, 21:52	#11 (permalink)
GSM MIND Product Manager Join Date: Feb 2003 Location: Your Exclusive Source Posts: 2,884 Member: 20645 Status: Offline Sonork: 100.1579175 Thanks Meter: 635	hello fren if the battery is full charged try to unlock again your phone with 3.1 unlocker it works reply me on this solution

08-12-2004, 22:02	#12 (permalink)
unlockclips.com Freak Poster Join Date: Apr 2004 Age: 51 Posts: 270 Member: 63553 Status: Offline Thanks Meter: 22	The other option is when you have the xxxx up on the screen press 1 to get test menu up press 99 and then 3. This will unlock the phone by formatting data.

08-13-2004, 08:47	#15 (permalink)
mcmac Junior Member Join Date: Aug 2004 Posts: 8 Member: 77410 Status: Offline Thanks Meter: 0	Seems like not getting the XXXX was a temporary glitch as I now get it. I did the procedure again and it gave me the same info. DIAG_FORMAT START DIAG_FORMAT OK Nothing changed. Still get the same "Invalid Network SIM" and frozen phone. I have tried 3 different SIM cards (3 different operators), tried the programs on 3 different computers, win98 and winxp, com1/com2, different com settings.. Same results.