[Failed] New vesion of Xiaomi 4A

[Pull256]

I just bought a Xiaomi 4A Gigabit in JingDong(JD). It seems like Xiaomi has changed the version of 4A.
The SKU number of this router is DVB4397CN and the firmware is 1.0.X instead of 2.X or 3.X.
I failed to hack this Router and if anybody want to buy a brand new 4A, Please watch out the version.

[doom345]

hello, I encountered with the same trouble. Have u figured it out. thank u

[medvedicos]

Hi. I got one of these devices in my hands too. No luck breaking in.

[Pull256]

Eventually, I got ssh access through this amazing program xmir-patcher.
However I found that the CPU of this router is not mt7621 but RTL8197F. Below is the message from cat /proc/cpuinfo

root@XiaoQiang:~# cat /proc/cpuinfo
system type             : RTL8197F
machine                 : Unknown
processor               : 0
cpu model               : MIPS 24Kc V8.5
BogoMIPS                : 666.41
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 64
extra interrupt vector  : yes
hardware watchpoint     : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa                     : mips1 mips2 mips32r2
ASEs implemented        : mips16
shadow register sets    : 4
kscratch registers      : 0
package                 : 0
core                    : 1
VCED exceptions         : not available
VCEI exceptions         : not available

Warning

So I'm guessing that this CPU won't work with existing breeds made for mt7621, and since I won't be able to use TTL to debrick, I'm giving up on continuing to flash it in. 建议不要刷入breed，CPU型号不符，怀疑小米改了制作工艺！