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With LPC protocol, this method should work. Try harder....
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Flash chips in VSCC table:
EF4019 (Winbond W25Q256)
C27519 (Unknown 00C27519h)
204319 (Unknown 00204319h)
C84019 (GigaDevice GD25x256C)
You need to use W25Q256 instead of W25R256...
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Take a closer look at the chipset you will find something like SRxxx. It's the model of the chipset....1 Photo
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Try to measure EDP_INT_AUX_P and EDP_INT_AUX_N signals in Diode mode. I think you will need to change U9850. I got the same problem in few A2141s.
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Remove the JTAG_STRAP resistor then you'll see the ID but unable to read with J-Link...
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It's a PSID signal which determines how many wattages of the charger you have plugged in. Unable to detect the charger may come from broken PR102 (it should be 33ohm if you measure 2 ends of the resistor), PD100.
It's not close to charging circuit but it's close to charger port....1 Photo
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Check diode value of R5300, R5301, R5305, R5306. Maybe the contact between T2 chip and the pad is not good....
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