我的机子是b860av1.1，浙江电信，本来运行得好好的，后来想刷机，又不懂，就在网上(tvapk——net/thread-2325775-1-1.html)下了一个浙江电信的固件，然后把系统文件里面的ota.zip手动替换了，然后使用终端模拟器运行了recovery，然后把系统刷了，之后系统启动时就一直重启，就变砖了。

今天刚到了一根usb转ttl线，想把里面的ota换回来，但是只能进uboot界面，然后我就按照教程znds——com/tv-618487-1-1.html，一步步做，做了SD启动卡，最后一步不行呢，就是进不了rec。但是又看不懂大神所说的分区刷入救砖。过程如下：

第一步，刷入boot

m8m2_n200_v1#sdc_update bootloader u-boot-aml-ucl.bin

sdio_detect return 1

[mmc_init] SDIO Port B:0, if_type=7, initialized OK!

Device: SDIO Port B

Manufacturer ID: 0

OEM: 0

Name: Tran Speed: 20000000

Rd Block Len: 512

SD version 2.0

High Capacity: Yes

Capacity: 7948206080

Boot Part Size: 0

Bus Width: 4-bit

fat:Filesize is 0x71770B[0M]

ERR(v2_common/optimus_simg2img.c)L60:sparse bad magic, expect 0xed26ff3a but 0xea000006

u-boot-aml-ucl.bin is exist

msg:Down(store) part(bootloader) sz(0x71770) fmt(normal)

msg:totalSlotNum = 0, nextWriteBackSlot 8

fat:Filesize is 0x71770B[0M]

fat:sz 0x770 gz 0x1770, bps 0x1000

msg:Burn Start...

msg:partsTabInSram=0xd9006028

msg:acsSettingInBin=0x4062b4, partTabSz=0x280

msg:Check parts table OK.

mmc switch part boot0 success

mmc switch part boot1 success

mmc switch part user success

msg:Burn complete

BURN u-boot-aml-ucl.bin to part bootloader OK!

=====>Burn part bootloader in fmt normal OK<======

第二步，刷入rec

m8m2_n200_v1#sdc_update recovery uImage_recovery

Device: SDIO Port B

Manufacturer ID: 0

OEM: 0

Name: Tran Speed: 20000000

Rd Block Len: 512

SD version 2.0

High Capacity: Yes

Capacity: 7948206080

Boot Part Size: 0

Bus Width: 4-bit

fat:Filesize is 0xb52ac8B[11M]

ERR(v2_common/optimus_simg2img.c)L60:sparse bad magic, expect 0xed26ff3a but 0x88776655

uImage_recovery is exist

msg:flash LOGIC partCap 0x1400000B

msg:Down(store) part(recovery) sz(0xb52ac8) fmt(normal)

msg:totalSlotNum = 0, nextWriteBackSlot 1

fat:Filesize is 0xb52ac8B[11M]

msg:Burn Start...

fat:sz 0xac8 gz 0x2ac8, bps 0x1000

msg:Burn complete

BURN uImage_recovery to part recovery OK!

=====>Burn part recovery in fmt normal OK<======

重启后无法进入rec，试了很多次都无法进入

第三步刷入ota时

m8m2_n200_v1#run recovery --update_package=/sdcard/ota.zip

enter recovery

Device: SDIO Port B

Manufacturer ID: 0

OEM: 0

Name: Tran Speed: 20000000

Rd Block Len: 512

SD version 2.0

High Capacity: Yes

Capacity: 7948206080

Boot Part Size: 0

Bus Width: 4-bit

reading recovery.img

** Unable to read "recovery.img" from mmc 0:1 **

Err imgread(L330):Fmt unsupported!genFmt 0x0 != 0x3

no recovery in flash

## Error: "--update_package=/sdcard/ota.zip" not defined

求大神献救砖之策！！！！