Constant panic attacks. How can I get it fix iPhone 4S

Hi  I have an iPhone 4s legally unblocked. My phone was working properly until couple of weeks ago. Now I have to reinstall everything every 24 hrs or so. I have tried everything and still my phone continue to crash. I don't know what the problem is. Could anybody help pls?

Panick attackt 1 :

ncident Identifier: 154A302B-254A-4C17-9805-8222853DBA2C

CrashReporter Key:   576e82e771c37fd00f3f86fac03f8584153c4274

Hardware Model:      iPhone4,1

Date/Time:       2012-07-08 11:33:50.979 +0200

OS Version:      iPhone OS 5.1.1 (9B206)

panic(cpu 1 caller 0x809243fb): "NAND device chip ID changed after reset (bus 1 ce 0 was 0x014e5050, now 0xff4e5050)"@/SourceCache/AppleIOPFMI/AppleIOPFMI-49.11/AppleIOPFMI.cpp:1447

Debugger message: panic

OS version: 9B206

Kernel version: Darwin Kernel Version 11.0.0: Sun Apr  8 21:51:47 PDT 2012; root:xnu-1878.11.10~1/RELEASE_ARM_S5L8940X

iBoot version: iBoot-1219.62.15

secure boot?: YES

Paniclog version: 1

Epoch Time:        sec       usec

  Boot    : 0x4ff8065e 0x00000000

  Sleep   : 0x4ff9017e 0x000d5bce

  Wake    : 0x4ff90318 0x00000009

  Calendar: 0x4ff90318 0x0001b87d

Task 0xc0860d20: 9121 pages, 110 threads: pid 0: kernel_task

          thread 0xc10ba610

                    kernel backtrace: d4473dac

                      lr: 0x8007bd2b  fp: 0xd4473dd8

                      lr: 0x8007c32f  fp: 0xd4473e04

                      lr: 0x80016391  fp: 0xd4473e1c

                      lr: 0x809243fb  fp: 0xd4473e54

                      lr: 0x8021dad9  fp: 0xd4473e80

                      lr: 0x8092329d  fp: 0xd4473e9c

                      lr: 0x809232eb  fp: 0xd4473eb0

                      lr: 0x80922291  fp: 0xd4473ebc

                      lr: 0x8021dad9  fp: 0xd4473ee8

                      lr: 0x80922247  fp: 0xd4473f08

                      lr: 0x8021563f  fp: 0xd4473f60

                      lr: 0x80211b79  fp: 0xd4473f78

                      lr: 0x8002c4d7  fp: 0xd4473fa8

                      lr: 0x8007a3dc  fp: 0x00000000

Task 0xc0860ac0: 183 pages, 3 threads: pid 1: launchd

Task 0xc0860140: 638 pages, 7 threads: pid 12: UserEventAgent

Task 0xc0860600: 274 pages, 3 threads: pid 13: notifyd

Task 0xc08603a0: 565 pages, 10 threads: pid 14: configd

Task 0xc085fee0: 13895 pages, 21 threads: pid 15: SpringBoard

Task 0xc085fc80: 154 pages, 4 threads: pid 16: syslogd

Task 0xc085fa20: 1597 pages, 14 threads: pid 17: CommCenter

Task 0xc085ee40: 281 pages, 2 threads: pid 22: powerd

Task 0xc085ebe0: 402 pages, 3 threads: pid 23: lockdownd

Task 0xc085e000: 1868 pages, 14 threads: pid 28: locationd

Task 0xc0f2bd20: 604 pages, 4 threads: pid 29: wifid

Task 0xc0f29980: 3894 pages, 28 threads: pid 44: mediaserverd

Task 0xc0f29720: 399 pages, 3 threads: pid 45: mediaremoted

Task 0xc0f294c0: 385 pages, 3 threads: pid 46: mDNSResponder

Task 0xc0f29000: 1426 pages, 6 threads: pid 48: imagent

Task 0xc0f83d20: 690 pages, 5 threads: pid 49: iapd

Task 0xc0f83860: 393 pages, 4 threads: pid 51: fseventsd

Task 0xc0f83600: 662 pages, 1 threads: pid 52: fairplayd.N94

Task 0xc0f833a0: 1352 pages, 9 threads: pid 53: dataaccessd

Task 0xc0f82c80: 421 pages, 4 threads: pid 56: awdd

Task 0xc0f82300: 436 pages, 3 threads: pid 60: apsd

Task 0xc0f820a0: 535 pages, 3 threads: pid 61: aggregated

Task 0xc0f814c0: 790 pages, 3 threads: pid 66: BTServer

Task 0xc0f81260: 731 pages, 4 threads: pid 67: aosnotifyd

Task 0xc0f81720: 265 pages, 3 threads: pid 75: networkd

Task 0xc10cdac0: 1460 pages, 10 threads: pid 84: Vib

Panick attack 2:

Incident Identifier: C5982B61-6A34-4BF7-8A7B-849B328C650D

CrashReporter Key:   576e82e771c37fd00f3f86fac03f8584153c4274

Hardware Model:      iPhone4,1

Date/Time:       2012-07-03 19:57:01.542 +0200

OS Version:      iPhone OS 5.1.1 (9B206)

panic(cpu 1 caller 0x80643b89): "sftl: lba mismatch; lba:0xce430, meta:0x3ae488bb "@/SourceCache/IOFlashStorage/IOFlashStorage-566.24/WhimoryPPN /Core/SFTL/s_read.c:30

Debugger message: panic

OS version: 9B206

Kernel version: Darwin Kernel Version 11.0.0: Sun Apr  8 21:51:47 PDT 2012; root:xnu-1878.11.10~1/RELEASE_ARM_S5L8940X

iBoot version: iBoot-1219.62.15

secure boot?: YES

Paniclog version: 1

Epoch Time:        sec       usec

  Boot    : 0x4fe71e12 0x00000000

  Sleep   : 0x4fe73608 0x00078455

  Wake    : 0x4fe7360b 0x00000008

  Calendar: 0x4ff2f2ce 0x000c9408

Task 0xc0860d20: 14131 pages, 108 threads: pid 0: kernel_task

          thread 0xc09522b0

                    kernel backtrace: d262be44

                      lr: 0x8007bd2b  fp: 0xd262be70

                      lr: 0x8007c32f  fp: 0xd262be9c

                      lr: 0x80016391  fp: 0xd262beb4

                      lr: 0x80643b89  fp: 0xd262bee4

                      lr: 0x80643d3d  fp: 0xd262bf34

                      lr: 0x80644235  fp: 0xd262bf50

                      lr: 0x8063c4c5  fp: 0xd262bf64

                      lr: 0x80632035  fp: 0xd262bf80

                      lr: 0x806322d1  fp: 0xd262bfa8

                      lr: 0x8007a3dc  fp: 0x00000000

Task 0xc0860ac0: 146 pages, 3 threads: pid 1: launchd

Task 0xc0860600: 468 pages, 8 threads: pid 12: UserEventAgent

Task 0xc0860140: 296 pages, 4 threads: pid 13: notifyd

Task 0xc08603a0: 495 pages, 12 threads: pid 14: configd

Task 0xc085fee0: 11770 pages, 22 threads: pid 15: SpringBoard

Task 0xc085fc80: 121 pages, 4 threads: pid 16: syslogd

Task 0xc085ee40: 167 pages, 2 threads: pid 22: powerd

Task 0xc085ebe0: 279 pages, 2 threads: pid 23: lockdownd

Task 0xc0f24d20: 472 pages, 4 threads: pid 29: wifid

Task 0xc0f22980: 3672 pages, 28 threads: pid 44: mediaserverd

Task 0xc0f22720: 265 pages, 3 threads: pid 45: mediaremoted

Task 0xc0f224c0: 289 pages, 3 threads: pid 46: mDNSResponder

Task 0xc0f22000: 592 pages, 6 threads: pid 48: imagent

Task 0xc0f7ed20: 338 pages, 5 threads: pid 49: iapd

Task 0xc0f7e860: 293 pages, 4 threads: pid 51: fseventsd

Task 0xc0f7e600: 414 pages, 1 threads: pid 52: fairplayd.N94

Task 0xc0f7e3a0: 1296 pages, 8 threads: pid 53: dataaccessd

Task 0xc0f7dc80: 254 pages, 2 threads: pid 56: awdd

Task 0xc0f7d300: 427 pages, 3 threads: pid 60: apsd

Task 0xc0f7d0a0: 414 pages, 5 threads: pid 61: aggregated

Task 0xc0f7c4c0: 501 pages, 6 threads: pid 66: BTServer

Task 0xc0f7c260: 443 pages, 4 threads: pid 67: aosnotifyd

Task 0xc0f243a0: 186 pages, 3 threads: pid 74: networ