@whycan
经过测试发现一个问题，使用USB供电是能识别到USB设备（Tina ADB能弹出来）。使用外部电源，把USB的电源断开就无法识别USB设备（Tina ADB不能弹出来）。

@whycan

@whycan
我发现了一个问题，我在上电后面刚识别设备时就点击固件烧录，可以进去烧录进度条。但是发现设备管理器里面弹出有不识别的设备。这个是不是就是烧录不进去设备没有识别呀。

有什么办法吗？

@whycan 在 V853 USB烧录不了问题—各位大佬帮忙看下 中说：

@wl17761275256

我记得只有安卓点这个地方才能进入烧录模式，你确认Linux可以这么做吗？

这个问题已经困扰我们太久了，还没有什么破解办法方法吗。

@whycan
先连接设备后，要点一下，才能进入烧录。

@whycan
上电后直接进去烧录界面，但是还是烧录失败。

@whycan
我试一下，补充一下使用SD卡烧录系统是没有问题的。

一、烧写问题描述：

• 1、USB上电后设备识别
  

• 2、PhoenixSuit.exe全志烧写工具识别
  
  

• 3、串口打印log

------run profile file-----
 _____  _              __     _
|_   _||_| ___  _ _   |  |   |_| ___  _ _  _ _
  | |   _ |   ||   |  |  |__ | ||   || | ||_'_|
  | |  | || | || _ |  |_____||_||_|_||___||_,_|
  |_|  |_||_|_||_|_|  Tina is Based on OpenWrt!
 --------------------------[    6.926014]
[    6.926014] insmod_device_driver
[    6.926014]
--------------------
 Tina Linux (Neptune, 5C1C9C53)
 ----------------------------------------------
swu_param: ####
swu_software: ####
swu_mode: ####
no swupdate_cmd to run, wait for next swupdate
root@TinaLinux:/# [    6.999539] urandom_read: 2 callbacks suppressed
[    6.999547] random: wpa_supplicant: uninitialized urandom read (3 bytes read)
[    7.013061] random: wpa_supplicant: uninitialized urandom read (1024 bytes re                  ad)
Successfully initialized wpa_supplicant
Could not read interface wlan0 flags: No such device
nl80211: Driver does not support authentication/association or connect commands
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Could not read interface wlan0 flags: No such device
wlan0: Failed to initialize driver interface
[    7.173337] android_work: sent uevent USB_STATE=CONNECTED
[    7.199100] configfs-gadget gadget: high-speed config #1: c
[    7.205527] android_work: sent uevent USB_STATE=CONFIGURED
udhcpc: sending discover
1970-01-01 00:06:43:079: WMG_EXCESSIVE [src/os/linux/utils.c:check_process_is_ex                  ist:32]: wpa_supplicant not exist
1970-01-01 00:06:44:097: WMG_EXCESSIVE [src/os/linux/utils.c:check_process_is_ex                  ist:32]: wpa_supplicant not exist
1970-01-01 00:06:45:114: WMG_EXCESSIVE [src/os/linux/utils.c:check_process_is_ex                  ist:32]: wpa_supplicant not exist
udhcpc: sending discover
1970-01-01 00:06:46:329: WMG_EXCESSIVE [src/os/linux/utils.c:check_process_is_ex                  ist:32]: wpa_supplicant not exist
1970-01-01 00:06:47:346: WMG_EXCESSIVE [src/os/linux/utils.c:check_process_is_ex                  ist:32]: wpa_sup[   12.172806] random: wpa_supplicant: uninitialized urandom rea                  d (3 bytes read)
plicant not exist
1970-0[   12.182932] random: wpa_supplicant: uninitialized urandom read (1024 by                  tes read)
1-01 00:06:47:346: WMG_ERROR [src/os/linux/linux_wpa.c:start_supplicant:365]:  f                  ailed to start wpa_supplicant times 1
1970-01-01 00:06:47:349: WMG_ERROR [src/os/linux/linux_wpa.c:start_supplicant:36                  5]:  failed to start wpa_supplicant times 2
1970-01-01 00:06:47:349: WMG_ERROR [src/os/linux/linux_wpa.c:linux_connect_to_su                  pplicant:1522]:  start wpa_supplicant failed
1970-01-01 00:06:47:349: WMG_ERROR [src/wmg_sta.c:sta_mode_enable:416]:  failed                   to connect to wpa_supplicant
1970-01-01 00:06:47:349: WMG_DEBUG [src/wmg_common.c:wifimg_switch_mode:991]:  w                  ifi sta mode enable faile
1970-01-01 00:06:47:349: WMG_DEBUG [src/wmg_common.c:wifimg_switch_mode:1014]:                    switch after current_mode_bitmap:0x0
1970-01-01 00:06:47:349: WMG_ERROR [src/wmg_common.c:wifimg_switch_mode:1021]:                    switch mode faile
1970-01-01 00:06:47:349: WMG_ERROR [src/wmg_common.c:__wifi_on:49]:  failed to s                  witch wifi mode
1970-01-01 00:06:47:349: WMG_ERROR [wifi_deamon.c:cmd_handle_o:277]:  wifi on st                  a mode failed
Successfully initialized wpa_supplicant
Could not read interface wlan0 flags: No such device
nl80211: Driver does not support authentication/association or connect commands
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Could not read interface wlan0 flags: No such device
wlan0: Failed to initialize driver interface
udhcpc: no lease, forking to background
[   99.476134] random: crng init done

• 4、烧写失败
  
  二、现象疑问

• 1、USB硬件上是从CPU——共模电感——USB连接器。没有发现硬件上的问题。

• 2、软件上使用同样的代码在双目开发板上没有问题，可以连接PhoenixSuit.exe烧录软件。

各位大佬，需要指点迷津呀，小弟在此谢过了。

@null037
兄弟，可以帮忙看下我这个问题吗？是不是也是芯片问题呀。这颗EMMC芯片也不在这个手册里面。[allwinner-v853-emmc-flash-support-list_v1.0.pdf]

我这个开机打印没有你帖子里面的打印的内容多。

https://bbs.aw-ol.com/topic/3487/v853-无法烧录问题-whycan晕哥?_=1683766917546

@whycan
晕哥，还有什么手段没有呀。坐等支持呀。