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iPhone 6 Error 9 CPU Repair Without BGA Reball

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iPhone 6 Error 9 CPU Repair Without BGA Reball

Have you ever come across with iPhone 6 error 9 issue? It is well known that once iPhone 6 error 9 appears while performing firmware update or system restores via iTunes, normal function becomes disrupted. And if this occurs frequently, that will be hard to handle. Several reasons are attributed towards the problem, and primary suspicion relates to the NAND Flash error as our previous blog has illustrated. This time REWA comes with a totally different solution regarding to iPhone 6 error 9 cpu repair caused by insufficient soldering within CPU BGA. With the help of our newly developed CNC chip grinding machine, chip removing can be safe and quick without damaging the logic board and nearby chips. If you have different opinions and solutions, please leave a comment below.

iPhone 6 Error 9 CPU Repair Without BGA Reball

1. Phone Disassembling

The phone is stuck in Recovery Mode when trying to start up. Connect it with computer and start system restore via iTunes.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Error 9 appears. Disassemble the phone and take out the logic board. Remove a part of the shield plate with cutting nipper.

iPhone 6 Error 9 CPU Repair Without BGA Reball

2. Malfunction Diagnosing

Test grounding resistance value of resistor R0317 and R0316 with diode mode-Abnormal value (480 under normal circumstances). R0317 and R0316 are connected with CPU pin AP31-SDA  and pin AR31-SCL directly.

iPhone 6 Error 9 CPU Repair Without BGA Reball

3. Malfunction Repairing

Take down the shield plate of CPU with hot air gun. Then put the logic board on the corresponding position of the CNC mold and fix it tightly. Load iPhone 6 corresponding logic board chip grinding program and start grinding.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Once finished, take out the logic board and use a sculpture knife to scrape carefully until the CPU sublayer circuit comes out. After that, clean with PCB cleaner.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Apply some UV curable solder mask to the exposed area, apart from the two bonding pads (SDA,SCL). Once it has been done, put the logic board under the UV dryer lamp for 10 minutes and then take out the logic board.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Solder tins on the two bonding pads with soldering iron. Then solder the 0.02mm copper wire to the two bonding pads respectively. The two soldered wires connect R0317-corresponding pad SDA and R0317-corresponding pad SCL respectively.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Test grounding resistance value of R0317,R0316 with diode mode again-Normal value this time.

iPhone 6 Error 9 CPU Repair Without BGA Reball

4. Phone Testing

Assemble the phone and restore via iTunes. Then activate the phone and test, malfunction fixed.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Once test finished, take out the logic board. Then apply some UV curable solder mask to the soldered place again. Put the logic board under the UV dryer lamp for 10 minutes.

iPhone 6 Error 9 CPU Repair Without BGA Reball

Assemble the phone and test again, all work normally.

iPhone 6 Error 9 CPU Repair Without BGA Reball

For more details on iPhone 6 error 9 CPU repair guide, please go to REWA YouTube channel.

Tools Used:

REWA CNC Chip Grinding Machine

Screw Drivers

Tweezers (ESD–10 / ESD–15)

LCD Opening Pliers (M)

Cutting Nipper

Maintenance Platform

Electron Microscope

Digital Multimeter

Soldering Iron

Hot Air Gun

Sculpture Knife

Solder Wire

UV Dryer Lamp

Anti-static Wrist Strap

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23 Comments
  • Pravesh kesharwani
    04/12/2018 at 8:20 pm

    PCIE NAND Flash Memory Chip Programmer for iPhone 6s/6s Plus/7/7 Plus/SE/iPad Pro – Gold – OEM New prize?

    • REWA
      04/13/2018 at 6:12 pm

      Thanks for the inquiry. Our sales will contact you by the email you left. Please check.

  • Amin
    01/25/2018 at 4:42 am

    Hi rewa this is amin .
    I am Looking for repairing special l have one is not much better do you have some idea please let me know .

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