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| IPhone XR Stuck in DFU, updates successfully but goes back to DFU | |
|---|---|
| Device | IPhone XR |
| Affects part(s) | Motherboard |
| Needs equipment | |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
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Problem description
Stuck in DFU mode
Flashes successfully with an update or restore but goes back to DFU mode.
Symptoms
- Screen shows no image and pulls 0.45A via USB charging
- Does not appear to boot
- Prompt to boot on DCPS, shows it hangs around 45mA draw
- Connect to PC and it's in DFU mode
- Flash an update or restore & it goes through 100% with no errors but goes back to DFU mode
Solution
- Check R0601 at the corner of NAND.
- This resistor connects PP1V8_IO to SPI_AP_TO_S4E_MOSI_BOOT_CONFIG1
- Clean the underfill around it & poke it hard.
- If it breaks, it must be replaced.
- Value is 4.7ohms
- After replacing it, the phone will no longer be in DFU mode & boot right up.
Migrated from old wiki