案例题目：HZ43A51卡在开机界面
关联产品： HZ43A51
机芯方案：MSD6A648-WY-8-00B2
故障现象：卡在开机界面
故障原因分析：开机连接升级工装观看打印信息进一步判断故障
检修过程：开机连接升级工装部分打印信息如下：
[ 20.330000] bootanimation: lastFrameCbk
[ 37.410000] init: avc: denied { set } for property=vendor.bootanimation_exit scontext=u:r:bootanim:s0 tcontext=u:object_r:default_prop:s0 tclass=property_service
遥控能开机，不能遥控关机，此时用U盘输入cu升级主程序不能正常升级，部分打印信息如下：
Reliable write is default supported!
>> mmc rmgpt
–21 %
** Find MBOOT **
** Find MPOOL **
** Find tvdatabase **
not_update_status=4;not_update_status & NOT_UPDATE_TVDATABASE_BIT=4(not_update_status中文含义：更新状态失败)
partition 1 no remove,not_update_status=4
partition 2 no remove,not_update_status=4
[ eMMC_CheckR1Error() ] eMMC Err: eMMC_ST_ERR_R1_31_24
[ eMMC_CheckR1Error() ] eMMC Err: eMMC_R1_WP_VIOLATION
0x2C26C0D4: 0Dh 04h 00h 09h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h | …………….
[ eMMC_CMD13() ] eMMC: CMD13 check R1 error: 80000A04h, should not retry
[ eMMC_WriteData_Ex() ] eMMC Err: W fail: 80000A04h
更换EMMC H26M41024HPC（N56）后故障排除
故障板号：RSAG7.820.8859
故障元件：N56
