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Best solution to fix iTunes error 11 on iPhone 7

The iPhone 7 reports unknown error 11 when flash it, what's going on?  Previously, we expand the iPhone 7 memory by JC Pro 1000s, after finish that, we flash the iPhone, and then iTunes error 11 shows up. Fortunately, we have find the best solution to fix it.


In the process of expanding iPhone memory, we remove the iPhone Nand flash, and then we install the new Nand flash, after finish that, we use iTunes to flash it, the result is that when the brush progress bar goes to One-tenth, the iTunes reports unknown error 11. 

Then we are trying to get the phone from DFU mode into recovery mode, it's a failure, the iPhone cannot enter recovery mode from DFU.

According to the previous maintenance experience, we need to take out the iPhone NAND flash to check whether the customer removed the resistor during the glue clean up. With the help of QUICK 861DW and tweezers, we quickly removed the NAND flash.

After checking, we found a few small capacitors and small resistors on the top of NAND flash that were removed when the NAND flash was replaced. Open the WUXINJI Dongle to check the iPhone Schematic Diagram; we can know that the resistor on PCIE bus is the 3.01K resistor.

Now we need to find the new resistor to fill it. Disassemble the resistor from a iPhone junk motherboard, and then install it. 

Now, we assemble the iPhone, connect it to computer to flash it again, now it can be flashed smoothly. The repairs end!




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