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#21 |
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![]() I'm thinking of cases where the patient PCB is dead and its "ROM" contents need to be transferred to a donor PCB. This frequently happens in HDD data recovery. In such cases the programmer would need to power up the PCB.
As for contention issues, that happens too. In such cases the data recovery professionals swap the actual ROM, but I've always wondered whether there is a simple in-circuit solution. Most of these people are programmers or IT "techs", so their knowledge of electronics is essentially zero. Basically they are just head swap mechanics and ROM jockeys, so getting them to try anything is often fruitless. Last edited by fzabkar; 11-25-2015 at 03:11 PM.. |
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#22 | |
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![]() Quote:
I examined the datasheet for one of the newly added devices (MX25L12839F): http://www.macronix.com/Lists/Datash...Mb,%20v1.1.pdf AFAICT this device can be programmed in Mode 0 just like "standard" SPI flash. Edit: Perhaps I have misunderstood the translation. Does the programmer terminate if the chip's ID cannot be detected, or does it terminate if the ID can be detected but not recognised as one of the supported devices? Last edited by fzabkar; 11-25-2015 at 03:43 PM.. |
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#23 |
Great Sage 齊天大聖
Join Date: Dec 2009
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![]() you can deal with contention a lot by shutting down the original bus-master by shorting or removing the clock / crystal
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#24 |
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![]() This "Kindle mod" demonstrates how to convert a 0V-1.8V LVTTL signal into one that ranges from 0.6V to 2.4V:
http://img11.hostingpics.net/pics/228167mod18V.jpg http://img15.hostingpics.net/pics/217313dku518.jpg It uses a 1N4148 diode and 22K resistor. Note: The above example modifies a serial LVTTL Tx/Rx interface but the same principle should apply to any 1.8V signal. Last edited by fzabkar; 11-27-2015 at 09:25 PM.. |
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#25 | |
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![]() Quote:
![]() With ISP (In Circuit Programming) we have to well aware of most likely circuit contentions / conflicts issues. As already mentioned, by @japlytic and @stj, these can be easily circumvented according to the circuit: a) if not tied up, keep the system in reset / hold state b) if tied up, shut down the bus by shorting or removing the oscillator / crystal If tied up and strong pull up/down found, then remove the 0 ohm resistor connected between the power bus and the IC power pin (common implementation in circuit boards with programmable ICs). AFAICT that ugly patch with a LDO will not work under 1.8V logic level! He’s just gambling with the lowest power supply level for the CH341 and added a capacitor, hopping it to work. It might… but be well prepared for very inconsistent results. Even the “super simple” level shifter will be more reliable and… simpler! I’ve used it a lot back in the early 3.3V logic emergence days. The same principle applies for 1.8V with the needed adjustments. Do not forget the Rx line. In any case, I strongly suggest you power up the hard drive pcb from any other auxiliary power source, not from the USB port. . |
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#26 | |
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![]() Quote:
Yes, you are full right, I have send an email to skygz@qq.com and he said me that the last version for unlocked usb dongle CH341A is the version 1.31 and the latest version for locked usb dongle CH341A is the version 1.33 and I have seen in the website: yadi.sk cracked versions of CH341A, these cracked CH341A versions are: v1.29/v1.30. As the v1.31 was released 1-6-2016 I believe that we will find a cracked v1.31 in the next future ![]() |
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#27 |
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![]() 1.31 cracked version please
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#28 |
Badcaps Veteran
Join Date: Dec 2008
Posts: 4,841
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![]() Why not just pay the author the $5 and have access to the latest versions...
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#29 |
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![]() give me attachement adress to have 1.31
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#30 |
Great Sage 齊天大聖
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![]() just upload it here.
click [go advanced] |
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#31 |
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Join Date: Sep 2009
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#32 |
Badcaps Veteran
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![]() Scroll down, under the Repply to thread form. See Additional Options, than click Manage Attachments, the rest is pretty straightforward.
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#33 |
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![]() Ch341a v1.30
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#34 |
Senior Member
Join Date: Sep 2009
Posts: 182
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![]() Thanks Zokasoft
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#35 | |
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#36 | |
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#37 |
New Member
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![]() hi you can send me a pm with version 1.31.
i'cant find on the forum |
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#38 |
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Join Date: Nov 2015
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![]() скиньте и мне пожалуйста (CH341A version 1.31)
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#39 |
New Member
Join Date: Nov 2015
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![]() вот немного другой софт Colibri.rar http://****************/forum/90-46716-4
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#40 |
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![]() I had upload CH341A v1.31 trail version, who would crack it?
http://www.mediafire.com/file/bq8zb1...341A_v1.31.zip |
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