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发表于 2011-7-27 00:11 · 日本
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看那个帖子上说的,现在的俄罗斯方法的可以吧所有是MXIC的,mt1335we解开,但是
Winbond的不可以,而0225的大所属都是Winbond的,只有少数型号的可以解开,这还是国外那些人一个个试验出来的,而Winbond的之所以解不开是因为一个电压值的原因,我的英语不太好,那些人还在接着俄罗斯的黑客的办法在研究呢,另外求一个英语超好的帮忙翻译一下这个
Hi!
It´s nice to see that finally this diy-solutions made its release.
Regarding the winbond issues:
1. Russian guys/sekil say you you need max. 1,0V DC at the Probe. Since its fed by VCC/CS you need to burn ~ 2,3 V DC.
Since the russian site did update the R Values for winbond to 3-5 ohms you must use at least a 2W resistor/trimpot to protect from burning.
A far better/more stable solution than twiddly resistors/trimpots is
1) a 1,0 V Zenerdiode (at least 1,3W) to ground or
2) two diodes in series i.e. 1n4007 (VF=0,7V) + BAt41-46 (VF=~ 0,3 V) and ground. Even 2 LED´s in series could/should work.
The benefit is: the diodes remain a high impedance at C59 (could be realy important)
2. Since winbond chips (read datasheet) need synchronisation to CLK (MXCI datasheet doesnt mention this), the winbond chips are usualy much more stable by design.
3. i came across a very skilled italian board (tech´s might already know it). they worked on winbond´s software and hardware protection for quite some time.
Since i read across somewhere: "you dont need that russian tool..." is bs. Since that tool is sending Status Register Protect (SRP) and BP instructions. So USE the Russian Tool and click the UNLOCK utton!
4. Since this kind of MRA-check is like the ProbeV1-3 in old LT´s you need the "phat" button in JF. Dont use the "slim" Button (this is also found in TX Tutorial).
Good luck,
snyder80
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