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Originally Posted by Yorker
Looking at your setup you still soldered something to the kindle itself, i did the same, only mine didn't have the jumper extension you have.
But yeah i understand that soldering multiple times is bad, of course it's a bit too late it too tiny and i got it burned a bit...
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Wait, what? Burned the serial pad headers? No wonder you aren't getting a full 1.8 volts. Desolder, clean the pads, measure the voltage to make sure you're getting 1.8 volts. Once you do, you can try again.
If you cooked the pads permanently, don't worry. There are identical pads on the other side of the motherboard, or so people say.
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Sorry i forgot it doesn't disappear but it didn't say usb and if i plug the adapter nothing is shown, also after clearing dmesg nothing appears there. does it appear with just the apdater plugged in?
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Yeah,
ttyUSB0 only shows up when you plug the adapter in, even if the Kindle is not connected to the adapter.
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So i can check if it relevant or does have to have 1.8 written?
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Yes!
It has to have about 1.8 volts (give or take 0.01 volts) to send output over serial. Earlier in this thread, you confirmed that it did read 1.755 volts or something. Why doesn't it read 1.8 volts now? You have to know why, and fix it, before we can get serial output. My money is on dirty or corroded contacts.
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Can you elaborate i still fail to see what you mean, i also used a cable but something always has to be soldered at all times no?
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You have to have something soldered. A cable or something, because the headers are too tiny, as you have seen.
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I don't actually need to wipe anything i just want it working again so i will only copy the new FW why wipe at all?
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Good ... but be careful, that's the point
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I tried with windows and as mentioned RX works i got GIBBERISH on putty but TX is still dead.
I followed the guide i mentioned earlier and set all the setting correctly, if RX is the receiving side why is it messed up and not in a clear text form?
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It's normal. The gibberish is because electricity is going in, but the "translation" by the serial cable results in gibberish because the input isn't "correct" serial protocol. Until you connect it to proper serial input, it's going to do that, and it's nothing out of the ordinary.
As for the Rx side not accepting input, that's also normal until you fix up Tx by feeding it proper serial.