T48 EMMC isp adapter does not work.

AlexShen

Hi! I already used this adapter, it was worked, but now it doesn't work correctly. The lines to the device's CPU are cut off and do not interfere, but the connection to the EMMC is unstable. Using an oscilloscope, I see a distorted signal on the lines. Is it possible to find out what transistors are installed in the adapter? This is a transistor in a SOT-323 package marked K N. Is this 2sk3018? Identical transistors are checked differently with a multimeter.

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2024-1-19 04:06

AlexShen

Please help me solve this problem. For checking, I use a TV board that I previously read and write through this adapter, but now it doesn’t work. AnalisisIC gives an error. I removed the T5 transistor and replaced it with a jumper - the analysis worked, but the reading did not work. I removed transistor T0 and replaced it with a jumper. After this the EMMC is read. What is causing this problem? The adapter worked previously.

AlexShen

With older versions I receive a message that the version is out of date and a proposal to upgrade, reading is interrupted.

AlexShen

With Ver 12.55. I click the Read key.

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2024-1-22 22:53

AlexShen

I replaced the 2sk3018 transistors on the CLK and D0 Lines and now the adapter works again, problem solved.