У меня все оказалось намного проще,просто стечение обстоятельств после обновления,замена контроллера питания,правда перед этим снимал флэш и проверял ее в EASY JTAG
HiPower mode is ON
Setting frequence to 21 Mhz
CMD Pullup Level: 3145 mV
CMD Active Level: 3238 mV
EMMC Device Information :
EMMC CID: 150100525831424D42078682AAC22420
EMMC CSD: D02701320F5903FFF6DBFFEF8E40400C
EMMC Manufacture Name: SAMSUNG , EMMC NAME: RX1BMB , EMMC NAME (HEX): 525831424D42 , S/N: 8682AAC2 , rev. 0x07
EMMC Manufacture ID: 0x15 , OEM ID: 0x00 , Device Type: BGA (Discrete embedded) , Manufacture Date: 2/2017
EMMC ROM 1 (Main User Data) Capacity: 29820 MB (000747C00000)
EMMC ROM 2/3 (Boot Partition 1/2) Capacity: 4096 KB (000000400000)
EMMC RPMB (Replay Protected Memory Block) Capacity: 4096 KB (000000400000)
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
Extended CSD Information :
Extended CSD rev: 1.8 (MMC 5.1)
Boot configuration [PARTITION_CONFIG]: 0x38 , Boot from: ROM1 (Main User Area)
Boot Bus Config: 0x00 , width 1bit
H/W Reset Function [RST_N_FUNCTION]: 0x01, RST_n signal is permanently enabled
Supported partition features [PARTITIONING_SUPPORT]: 0x07
Device supports partitioning features
Device can have enhanced technological features in partitions and user data area
Device can have extended partitions attribute
Partition Settings [PARTITION_SETTING_COMPLETED]: 0x00
Backup saved: RX1BMB_8682AAC2_20180309_095043.extcsd
EMMC Init completed.
Scanning soft partitions
GPT header is found and is valid
Partition: modem, [000004000000 - 000009400000], size: 000005400000
Partition: fsc, [00000C000000 - 00000C000400], size: 000000000400
Partition: ssd, [00000C000400 - 00000C002400], size: 000000002000
Partition: sbl1, [00000C002400 - 00000C082400], size: 000000080000
Partition: sbl1bak, [00000C082400 - 00000C102400], size: 000000080000
Partition: rpm, [00000C102400 - 00000C182400], size: 000000080000
Partition: rpmbak, [00000C182400 - 00000C202400], size: 000000080000
Partition: tz, [00000C202400 - 00000C402400], size: 000000200000
Partition: tzbak, [00000C402400 - 00000C602400], size: 000000200000
Partition: devcfg, [00000C602400 - 00000C642400], size: 000000040000
Partition: devcfgbak, [00000C642400 - 00000C682400], size: 000000040000
Partition: dsp, [00000C682400 - 00000D682400], size: 000001000000
Partition: modemst1, [00000D682400 - 00000D802400], size: 000000180000
Partition: modemst2, [00000D802400 - 00000D982400], size: 000000180000
Partition: DDR, [000010000000 - 000010008000], size: 000000008000
Partition: fsg, [000010008000 - 000010188000], size: 000000180000
Partition: sec, [000010188000 - 00001018C000], size: 000000004000
Partition: splash, [000014000000 - 000015400000], size: 000001400000
Partition: aboot, [000018000000 - 000018100000], size: 000000100000
Partition: abootbak, [000018100000 - 000018200000], size: 000000100000
Partition: boot, [000018200000 - 00001C200000], size: 000004000000
Partition: recovery, [00001C200000 - 000020200000], size: 000004000000
Partition: devinfo, [000020200000 - 000020300000], size: 000000100000
Partition: system, [000020300000 - 0000E0300000], size: 0000C0000000
Partition: cache, [0000E4000000 - 0000F4000000], size: 000010000000
Partition: persist, [0000F4000000 - 0000F6000000], size: 000002000000
Partition: misc, [0000F6000000 - 0000F6100000], size: 000000100000
Partition: keystore, [0000F6100000 - 0000F6180000], size: 000000080000
Partition: config, [0000F6180000 - 0000F6188000], size: 000000008000
Partition: oem, [0000F6188000 - 0000FA188000], size: 000004000000
Partition: limits, [0000FC000000 - 0000FC008000], size: 000000008000
Partition: mota, [000100000000 - 000100080000], size: 000000080000
Partition: dip, [000100080000 - 000100180000], size: 000000100000
Partition: mdtp, [000100180000 - 000102180000], size: 000002000000
Partition: syscfg, [000102180000 - 000102200000], size: 000000080000
Partition: mcfg, [000102200000 - 000102600000], size: 000000400000
Partition: lksecapp, [000104000000 - 000104020000], size: 000000020000
Partition: lksecappbak, [000104020000 - 000104040000], size: 000000020000
Partition: cmnlib, [000104040000 - 000104080000], size: 000000040000
Partition: cmnlibbak, [000104080000 - 0001040C0000], size: 000000040000
Partition: cmnlib64, [0001040C0000 - 000104100000], size: 000000040000
Partition: cmnlib64bak, [000104100000 - 000104140000], size: 000000040000
Partition: keymaster, [000104140000 - 000104180000], size: 000000040000
Partition: keymasterbak, [000104180000 - 0001041C0000], size: 000000040000
Partition: apdp, [000108000000 - 000108040000], size: 000000040000
Partition: msadp, [000108040000 - 000108080000], size: 000000040000
Partition: dpo, [000108080000 - 000108082000], size: 000000002000
Partition: cust, [000108082000 - 000128082000], size: 000020000000
Partition: userdata, [000128082000 - 000747BFBE00], size: 00061FB79E00
GPT header successfully parsed
Get firmware version
Brand = Xiaomi
Manufacturer = Xiaomi
Model = Redmi 4X
Phone platform = msm8937
CPU Abi = arm64-v8a
Android release = 7.1.2
Firmware version = N2G47H
Firmware date = Tue Feb 6 19:13:22 WIB 2018
И еще сразу на всякий случай прошил Флэшку по вендору
Заменил контроллер после всего и аппарат завелся