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Author eeprom writer needed
ravi_SE
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Joined: May 13, 2004
Posts: 7
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Posted: 2004-10-29 19:24
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i want the eeprom writer from prolific.
it was mentioned in one of the posts by morgan davis
the post read..
I FIXED THE PROBLEM! I opened up the box on the cable and found the chip version was pl-2303HX. got the drivers for it and that didnt work. At this stage i was desparate, and i found on the Prolific site an EEPROM writer, so i tried changing the PID to 2303 from its original 1234. didnt work. then i accidentaly hit the "writer default" button. it went through and changed a bunch of the eeprom...

if any one has downloaded the file from prolific, please could you send it to me?
Sierrabravo
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Joined: Oct 30, 2004
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Posted: 2004-10-30 12:50
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I need too this eeprom writer. tech.profilic.com.tw is unreachable.
I have USB data cable for siemens c25/c35/m50 with pl-2303hx chip ... but it doesn't work.
Only data exchange between pc and phone works.
The cable don't charge the phone, when benefits indicates "Optional to Integrate External Charger Circuit". I think that this cable must charge the phone, but i'm not sure that the problem is the chip!
Can anyone help me?

Tnx.
suren_k700
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Joined: Oct 27, 2004
Posts: 12
From: Chennai , India
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Posted: 2004-11-01 06:05
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which eeprom do u want to program .?
The mobile world was in chaos ... then SE came .. now its peacefull !!
Sierrabravo
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Posted: 2004-11-01 10:00
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I'm not really a big expert about eeprom & eep writer, but my idea was to modify something on the pl-2303hx chip of my usb data cable.

I read this post http://www.esato.com/board/viewtopic.php?topic=71954#post957767 and I hope to resolve this problem!

Vendor email me that "The cable have superfluity charge function.
If this function can't use. It isn't product problem.
Best wishes!"

But charge function doesn't work !!! ((


Driver installation was succesfully, before with vendor's driver and then with this driver http://www.rhy.com.cn/download/pl2303hx.zip

System Hardware tell me "Profilic USB-to-Serial Com Port", then I think that i'm not wrong.
But, why doesn't my cable charge my phone???

The cable has a switch that I suppose turn on/off charge function.

Help.
ravi_SE
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Joined: May 13, 2004
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Posted: 2004-11-01 13:22
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i didnt think you need the chip number for eeprom writers. but if it is necessary i want pl2303. but in any case send me whichever one you have for prolific chips

as for the other post,
the eeprom/ cable is fine if u can communicate with ur mobile.
th charging doesnt happen because of some loose cables.
open the cable's black box and see if any cables are unconnected.
i can guide further, if you reply on above.


i am really frustrated with this cable.
i am thinking of ripping the mobile connector from the usb cable and making a normal serial one. then i wont need to worry about the @$$#0!e cable's drivers!!
even though this way i lose the worth of my money i paid for that usb s#!+, i'll get something working.!!!
ESTOR
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Joined: Apr 20, 2002
Posts: > 500
From: Singapore
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Posted: 2004-11-02 19:37
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you would need a different chip to make the cable serial. You can't just disconnect the chip.

Have you tried the different drivers, like the one above specifically for the HX, or read this post?

http://www.esato.com/board/viewtopic.php?topic=73891

I am not convinced the eprom writer is really necessary for the cable to work. Most often the cable does not connect because the COM port speed was not set at 9600.


[ This Message was edited by: ESTOR on 2004-11-02 18:47 ]
ravi_SE
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Posted: 2004-11-14 21:00
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will keep you people posted on what happened with my cable, so that you can atleast get some thing out of the money you paid for your cable....
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