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resave [2019/03/10 14:27] – external edit 127.0.0.1resave [2025/10/14 06:22] (current) – external edit 127.0.0.1
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 <WRAP center round important 70%> <WRAP center round important 70%>
 ===注意:救砖操作会冲掉校准数据=== ===注意:救砖操作会冲掉校准数据===
-[[:backup|备份WI-FI校准数据看这里]]+[[:backup|救砖前需要确保已经备份WI-FI校准数据]]
 </WRAP> </WRAP>
-====救砖操作==== + 
-此方法需要用到SPI编程器,需支持32MB FLASH的。 +=====新版救砖方法===== 
-编程器刷机注意: +====准备==== 
-  * 板子的WiFi校数据已份。如果弄丢WiFi校数据,刷后板子的WiFi基本可能报废。 +备:JLink-V9或以上版一台,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/
-  * 板子的Uboot已经损坏,只能通过编程器刷机。 + 
-首先,保证不要给Widora供电,找到FLASH编程器的SPI编程接口(3.3VD、MOSI、CLK、MISO、CS、GND)使用杜邦线按照图和Widora连接 +====连接==== 
-{{ ::11.jpg |}} +找到BIT模组,或者NEO的SPI接口,分别找到如6个引脚: 
-电脑上使用编软件正常的烧写即可可以检测到SPIFLASH型号为W25Q128这里有个窍门,实际选择FLASH时候可以选小容量例如25Q80,因为我们只烧UBOOT。 + 
-{{ ::12.jpg |}} +BIT/NEO -------- 20Pin JTAG连接器 
-此时可以使用编程器烧写uboot了一般SPI NOR FLASH要求写入前必须格式化,仅仅写入UBOOT即可。UBOOT启动,可以参考UBOOT刷机方法刷无线校准数据和系统镜像。+ 
 +GND -------- 20 
 + 
 +CLK/CK -------- 9 
 + 
 +CS0 -------- 7 
 + 
 +MO/MOSI -------- 5 
 + 
 +MI/MISO -------- 13 
 + 
 +VF -------- 1 
 + 
 +{{ ::pinout-spi-20-pin.gif |}} 
 + 
 + 
 +====打开工==== 
 +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 
 + 
 +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: 
 +<code> 
 +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 
 +</code> 
 + 
 + 
 +刷机视频 {{ ::qq20201211-183112-hd.mp4  |}} 
 + 
 + 
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