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Reprogram PL2. 30. First post here (sorry it's quite a length one). Here's the problem - I have two USB to serial adaptors (identified as using the Prolific PL- 2. OS's. I would like to be able to identify them through software without having to know which adaptor is plugged into which USB bus or whatever. If serial device X is connected to adaptor X and serial device Y connected to adaptor Y, when in linux the kernel can detect an assign these USB devices different device names between reboots. I've compared the devices in Windows Device Manager, and also with 'lsusb - v' in linux and there's little to distinguish between them. I've read the following thread from this forum about being able to reprogram the EEPROM - edaboard.
I leave the eeprom writer program settings as default, change the serial number or the PID and press write, I get an error message ! However I don't see anything in either OS that relates to the serial number I supposedly wrote to the device. Since that first time of using the EEPROM writer with that device, I get exactly the same behaviour as adaptor 1 when writing. When trying to read the EEPROM I get the alert message . IIRC you need a special USB board that puts out 6. V to program the EEPROM in the rev.
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D, and it can only be programmed once. A has a 2- wire EEPROM interface though, and I think if you program an external EEPROM correctly you can tell the PL2. High Power device and therefore get 5. A from the USB port. I keep meaning to try this but never have. If you get it to work, write back and let us know!
No response (been about a week now). If anyone has any info to help with this, it would be greatly appreciated - seems I'm running out of things to try.
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Includes EEPROM Writer and OTPROM Application Note. PL2305 MP Tool Driver & Test Program PL2303 Update Information . Pl2303 EEPROM Writer program Search and download pl2303 EEPROM Writer program open source project / source codes from CodeForge.com.
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- Modify PL2303 PID & VID. Below is a screenshot of the EEPROM writer after pressing the read button on the non-modified.
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