Hello, please help me with an error NAND

[NAND]_FindFlashMediaAndKeepout :601 physical nand block offset 1

[NAND] start :356 this 0x96fec400 PROVIDER=0x96193b80 flashMedia=0x96193b80

[NAND] WMR_Start : 149 Apple PPN NAND Driver , Read/Write

[NAND] WNR_Start : 174 FIL_Init [OK]

[NAND] WNR_Open : 371 VFL_Open [OK]

[NAND] s_cxt_boot:88 sftl: error, unclean shutdown; adopted 44288 spans

[NAND] WNR_Open : 420 FIL_Open [OK]

[NAND] _publishServices:642 FIL capabilities: 0x00000001

[NAND] _ppnvflGetStruct :3469 Checking borrowed blocks - count: 44 max_count: 44

[NAND] _fetch BorrowedList:881 number of borrowed blocks 37

a long time is not included, then after pressing the home button and the lock button is activated. After working normally, after a while back is turned off by itself. Sorry for my english)

help solve the problem, thanks in advance