How to Downgrade Vivo Y12 MTK [Answered]

[K-B MOBILE]

How to Downgrade Vivo Y12 MTK CPU Sep 2022 Security Plz Guide me

Please disconnect battery and USB cable.

Model Settings:
Interface : eMMC
Voltage   : 2.8V
Bus Mode  : 1 bit
Bus speed : Auto

Connecting...
Device       : Samsung eMMC DX68MB
Page size    : 512 B
Block size   : 512 B
Block count  : 61071360
Size         : 29.12 GB (29820.00 MB)
---------------------------------------------------------------
CID Info

CID                   : 150100445836384D4209F80FFAF1C71F
Manufacturer ID       : 0X15
Device/BGA            : BGA (Discrete embedded)
OEM/Application ID    : 0X00
Product name          : DX68MB
Full name one from    : KMDX60018M-B425
Product revision      : 0.9
Product serial number : (hex) F80FFAF1
Manufacturing date    : 12/2020
---------------------------------------------------------------
CSD Info

CSD                   : D02701320F5903FFF6DBFFEF8E40400D
CSD structure         : CSD version No. 1.2
SPEC version          : 4.1, 4.2, 4.3, 4.4, 4.41, 4.5,
                        4.51, 5.0, 5.01, 5.1
Data read access time1: 15 ms
TRAN speed            : 26 MHz
READ block length     : 512 Bytes
WP group enable       : YES
PERM_WRITE_PROTECT    : NO
TMP_WRITE_PROTECT     : NO
---------------------------------------------------------------
EXTCSD Info

Revision 1.8 (for MMC v5.1)
Erase block size      : 512 Kbytes
Boot1 size            : 4096 Kbytes
Boot2 size            : 4096 Kbytes
RPMB size             : 4096 Kbytes

Partition config      : (0x48) 01001000
Boot partition enable : Boot partition 1
(Bus width = 8Bit)
Boot ACK              : Boot acknowledge sent during boot operation Bit

Boot bus conditions   : (0x02) 00000010
Boot bus width        : x8 (sdr/ddr) bus width in boot operation mode
Reset boot bus conditions   : Reset bus width to x1, single data rate and backward compatible timings after boot operation (default)
Boot mode             : Use single data rate + backward compatible timings in boot operation (default)

RST_n function        : (0x01) RST_n signal is permanently enabled

Partitioning support  : Device supports partitioning features
Enhanced attribute    : Device can have enhanced technological features in partitions and user data area.
Max enhanced data size: 15261696 Kbytes
Partitions attribute  : 0x0
Part setting completed: 0x0
GP partition 1 size   : 0 b
GP partition 2 size   : 0 b
GP partition 3 size   : 0 b
GP partition 4 size   : 0 b
Enhanced area size    : (0x0) 0 b
Enhanced area start   : (0x0) 0 b

Backup EXT_CSD saved to file C:/Program Files (x86)/Medusa Pro Software/EXT_CSD Backups/DX68MB_20_11_2022_11_16_15.bin.
Connect successful.
---------------------------------------------------------------
SW: 2.2.4.7; FW: 1.24.
P00: GPT              (00000000, 00000040)	32 KB
P01: boot_para        (00000040, 00000800)	1024 KB
P02: recovery         (00000840, 00030000)	96 MB
P03: para             (00030840, 00000400)	512 KB
P04: expdb            (00030C40, 0000A000)	20 MB
P05: vbmeta_system    (0003AC40, 00004000)	8 MB
P06: vbmeta_vendor    (0003EC40, 00004000)	8 MB
P07: frp              (00042C40, 00000800)	1024 KB
P08: nvcfg            (00043440, 00010000)	32 MB
P09: nvdata           (00053440, 00020000)	64 MB
P10: backup           (00073440, 00005000)	10 MB
P11: survival         (00078440, 00030000)	96 MB
P12: reserved         (000A8440, 00005000)	10 MB
P13: cust             (000AD440, 00020000)	64 MB
P14: vgc              (000CD440, 00064000)	200 MB
P15: storage          (00131440, 00020000)	64 MB
P16: logdump          (00151440, 00020000)	64 MB
P17: md_udc           (00171440, 0000B4D0)	22.6 MB
P18: metadata         (0017C910, 00010000)	32 MB
P19: protect1         (0018C910, 00004000)	8 MB
P20: protect2         (00190910, 000076F0)	14.87 MB
P21: seccfg           (00198000, 00004000)	8 MB
P22: persist          (0019C000, 00018000)	48 MB
P23: sec1             (001B4000, 00001000)	2048 KB
P24: proinfo          (001B5000, 00001800)	3072 KB
P25: efuse            (001B6800, 00000400)	512 KB
P26: md1img           (001B6C00, 00032000)	100 MB
P27: spmfw            (001E8C00, 00000800)	1024 KB
P28: scp1             (001E9400, 00000800)	1024 KB
P29: scp2             (001E9C00, 00000800)	1024 KB
P30: sspm_1           (001EA400, 00000800)	1024 KB
P31: sspm_2           (001EAC00, 00000800)	1024 KB
P32: gz1              (001EB400, 00008000)	16 MB
P33: gz2              (001F3400, 00008000)	16 MB
P34: nvram            (001FB400, 00020000)	64 MB
P35: lk               (0021B400, 00020000)	64 MB
P36: lk2              (0023B400, 00020000)	64 MB
P37: boot             (0025B400, 00030000)	96 MB
P38: logo             (0028B400, 00004000)	8 MB
P39: dtbo             (0028F400, 00004000)	8 MB
P40: tee1             (00293400, 00002800)	5 MB
P41: tee2             (00295C00, 00006400)	12.5 MB
P42: super            (0029C000, 00C00000)	6 GB
P43: vbmeta           (00E9C000, 00004000)	8 MB
P44: cache            (00EA0000, 00080000)	256 MB
P45: userdata         (00F20000, 02B007DF)	21.5 GB
P46: otp              (03A207DF, 00015800)	43 MB
P47: flashinfo        (03A35FDF, 00008000)	16 MB
Backuping nvdata partition... 
Opening C:/Program Files (x86)/Medusa Pro Software/Backups/DX68MB_nvdata_0x53440_0x20000_20_11_2022_11_16_15.bin file...
Reading. Please wait... Done.
Elapsed time 00:00:26 
SW: 2.2.4.7; FW: 1.24.

---------------------------------------------------------------
Searching Android build info...
Ok

Disk/Image size     : 47c00000 bytes
Device sector size    : 512 bytes
Partition offset      : 2736128
Number of sectors     : 12582912
Build ID              : RP1A.200720.012
Display Build ID      : RP1A.200720.012 release-keys
Release ID            : 11
Architecture ABI      : arm64-v8a
Architecture ABI List : arm64-v8a,armeabi-v7a,armeabi
Build Description     : full_k65v1_64_bsp-user 11 RP1A.200720.012 eng.compil.20220926.233234 release-keys

---------------------------------------------------------------
Save to C:/Program Files (x86)/Medusa Pro Software/Samsung eMMC DX68MB_20_11_2022__11_18_29.mpt file...

[K-B MOBILE]

I Have Make Backup Do Factory Format Now When i Write Preloader Showing error 012
Plz Help me

[Medusa Box]

Hello

Downgrade may lead damage your device, we don't recommend downgrade firmware version.

In case you are sure in your acts, try to use another firmware