Error '0x200000' and constant reboot on iPhone after iOS 18.4.1 update

Frequent reboot after updating to 18.4.1, approximately every 3 minutes, sometimes less often. Non-original screen and back cover. Error 0x200000 specifically on the back cover. You can't roll back iOS and in general you can't do anything, unless you throw it in the trash or wait for an update =((


{"bug_type":"210","timestamp":"2025-04-28 21:45:33.00 +0300","os_version":"iPhone OS 18.4.1 (22E252)","roots_installed":0,"incident_id":"CE38493D-BDE6-443D-95ED-9D03BAA935B3"}

{

"build" : "iPhone OS 18.4.1 (22E252)",

"product" : "iPhone15,4",

"socId" : "8120",

"socRevision" : "11",

"incident" : "CE38493D-BDE6-443D-95ED-9D03BAA935B3",

"crashReporterKey" : "0d3fa69d88032d569b3b67be472ed8a642fc5937",

"kernel" : "Darwin Kernel Version 24.4.0: Sat Mar 15 18:27:25 PDT 2025; root:xnu-11417.102.9~20\/RELEASE_ARM64_T8120",

"date" : "2025-04-28 21:45:33.83 +0300",

"panicString" : "panic(cpu 0 caller 0xfffffff04319b2b0): SMC PANIC - ASSERT: target\/d37\/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40\nS.sensor array 0 - 4 is 0x0, 0x200000, 0x0, 0x0, 0x0 \nF.sensor array 0 is 0x0\n\n - Misc(2) OUTBOX1 not ready\nASSERT: target\/d37\/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40\nS.sensor array 0 - 4 is 0x0, 0x200000, 0x0, 0x0, 0x0 \nF.sensor array 0 is 0x0\n\n\nRTKit: RTKit-2784.100.168.release - Client: AppleSMCFirmware_H15-5204.100.558.d37.REL\n!UUID: 265bd175-3518-3c46-a9f9-db0de36afbd4\nASLR slide: 0x0000000000000000\nTime: 0x0000000322466544\n\nFaulting task 2 Call Stack: 0x000000000004f08c 0x000000000004ea44 0x000000000004e860 0x000000000004d23c 0x000000000003b588 0x0000000000042cc4 0x000000000004abf8\n\nChinook ASC Async error info: \nl2c_err_sts 0x5000fbfc00000000, l2c_err_adr 000000000000000000, l2c_err_inf 000000000000000000\nlsu_err_sts 000000000000000000, fed_err_sts 000000000000000000, mmu_err_sts 000000000000000000\ndpc_err_sts 000000000000000000\n\nMailbox (0): (0)\n Inbox AKF_KIC_INBOX_CTRL = 0x00022201, AKF_KIC_MAILBOX_SET = 0x11111101\n Outbox AKF_AP_OUTBOX_CTRL = 0x00022201, AKF_AP_MAILBOX_SET = 0x00000000\n\n dir endpoint



[Re-Titled by Moderator]

iPhone 15

Posted on Apr 28, 2025 11:58 AM

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Apr 29, 2025 6:18 AM in response to los_santos1989

Basically it’s a kernel panic and is indicating a hardware failure affecting multiple systems. Most concerning is the SMC (System Management Controller) failure. It’s extremely unlikely it’s software related.


You need to have Apple perform diagnostics on your iPhone. It can be done in person at an Apple Retail Store or at an Apple Authorized Service Provider. You can also contact Apple Support and try remote diagnostics. However, remote diagnostics will probably fail.


If you’re in the US please call  1-800-MY-APPLE or outside the US, consult the support articles below.


Contact Apple for support and service - Apple Support


Genius Bar Reservation and Apple Support Options - Apple


Explore Service Locations


Official Apple Support


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Apr 28, 2025 1:00 PM in response to los_santos1989

There is no way for you to interpret the logs, as they do not contain any information that can be read by anyone other than Apple. If you are experiencing problems with the device, then I suggest that you contact Apple Support. Use the links at the top or bottom of the page here to start a support ticket. They can interpret the logs and also do a remote test on your device if there are any additional issues and explain your options.

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Apr 29, 2025 6:28 AM in response to ChrisJ4203

thanks. interpretation is here

0x200000Wireless Charge Coil

There is a sensor on the wireless charge coil cable that is paired/calibrated to the device. Replacing it with another back glass assembly, or wireless charge coil will result in the same issue, unless you use an Apple part (back glass) supplied by Apple's Self Service Repair program and run System Configuration.

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Apr 29, 2025 6:29 AM in response to Jeff Donald

I’ve had Apple preform diagnostics on the device and they said that everything was good and nothing was wrong but I’ve also tried that send in service and they said they couldn’t replicate problem.Maybe going to a Genius Bar would work but the nearest one is around 3 hours away from me.

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Error '0x200000' and constant reboot on iPhone after iOS 18.4.1 update

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