===注意：救砖操作会冲掉校准数据=== [[:backup|救砖前需要确保已经备份了WI-FI校准数据]] =====新版救砖方法===== ====准备==== 准备：JLink-V9或以上版本一台，J-Flash SPI软件。（可通过安装Jlink全家桶得到，下载地址： https://www.segger.com/downloads/jlink/ ) ====连接==== 找到BIT模组，或者NEO的SPI接口，分别找到如下6个引脚： BIT/NEO -------- 20Pin JTAG连接器 GND -------- 20 CLK/CK -------- 9 CS0 -------- 7 MO/MOSI -------- 5 MI/MISO -------- 13 VF -------- 1 {{ ::pinout-spi-20-pin.gif |}} ====打开工程==== 打开J-FLASH SPI软件，然后Open Project中打开{{ ::32m4b.jflash |}}。 然后Open Datafile中找到要刷的uboot。然后会问起始地址，保持默认0点OK {{ ::截屏2020-12-11_下午8.36.30.png |}} ====烧写==== 菜单栏Target中点击Connect，此时Log窗口中显示 Connected successfully 然后再菜单栏Target中点击Program，会询问是否抹掉扇区，点击Yes。 {{ ::截屏2020-12-11_下午8.40.31.png |}} LOG： Programming target (111760 bytes, 1 range) ... - Reading affected sectors ... - 2 of 512 sectors affected, 1 range, 0x0 - 0x1FFFF - Target memory read successfully. (131072 bytes, 1 range) - Erasing affected sectors ... - 2 of 512 sectors affected, 1 range - Affected sectors 0 to 1 (0x0 - 0x1FFFF) - Erase operation completed successfully - Target programmed successfully - Completed after 2.421 sec 刷机视频 {{ ::qq20201211-183112-hd.mp4 |}}