sep rom boot panic and constant/intermittent rebooting
iPhone 6 64gb on 10.0.2 was stuck in boot loop a couple months ago. Got wife new phone and put 6 aside until now. Currently it is working and I've upgraded to iOS 10.2 but it will still have issues booting. Apple logo off logo off logo off. I can try to twist the phone a little and it seems to help. If I have a passcode on it will let me type it in and then freeze on last number. Hard reset with more twisting and I eventually unlock. No passcode does better getting in phone. I've already reset to factory and still have issues. Trying to save phone for daughter. Several different Panic.ips entries listed in Diag and usage from when wife started having issue. Any help in diagnosing and repairing appreciated. If you need a full diag please let me know.
"panicString" : "panic(cpu 0 caller 0xfffffff00f74650c): \"SEP ROM boot panic.
"panicString" : "panic(cpu 0 caller 0xfffffff014a2ff24): \"sks request timeout (3 strikes)\"\nDebugger message: panic\nMemory ID: 0x3\nOS version: 14A456\nKernel version: Darwin Kernel Version 16.0.0: Sun Aug 28 20:36:55 PDT 2016; root:xnu-3789.2.4~3\/RELEASE_ARM64_T7000\niBoot version: iBoot-3406.1.79\nsecure boot?: YES\nPaniclog version: 5\nKernel
panicString" : "panic(cpu 0 caller 0xfffffff026d3e064): \"Timeout waiting for SEP reply to SLEEP control message; \" \"controlEP Rx queue outstanding: 0; Rx queue latest: 0x00010000; \" \"H\/W mailbox error: 0xE00002D8\"\nDebugger message: panic\nMemory ID: 0x3\nOS version: 14A456\nKernel version: Darwin Kernel Version 16.0.0: Sun Aug 28 20:36:55 PDT 2016; root:xnu-3789.2.4~3\/RELEASE_ARM64_T7000\niBoot
panicString" : "panic(cpu 0 caller 0xfffffff020d48370): \"Timeout on MANIFEST\"\nDebugger message: panic\nMemory ID: 0x3\nOS version: 14A456\nKernel version: Darwin Kernel Version 16.0.0: Sun Aug 28 20:36:55 PDT 2016; root:xnu-3789.2.4~3\/RELEASE_ARM64_T7000\niBoot version: iBoot-3406.1.79\nsecure boot?: YES\nPaniclog version: 5\nKernel
"panicString" : "panic(cpu 0 caller 0xfffffff014f4650c): \"SEP ROM boot panic. 0x86540BD381DB7E5527E8ACC28ECE1FAC7E712E1B54FA5FF1F1CD00870783ACFC158CD4A029833 F6E549A8A599D4A236A\"\nDebugger message: panic\nMemory ID: 0x3\nOS version: 14A456\nKernel version: Darwin Kernel Version 16.0.0: Sun Aug 28 20:36:55 PDT 2016; root:xnu-3789.2.4~3\/RELEASE_ARM64_T7000\niBoot version: iBoot-3406.1.79\nsecure boot?: YES\nPaniclog version: 5\nKernel