在大多數高通平臺上，默認都提供以下的按鍵功能：
- 按住 vol+ 鍵開機，進入 recovery 模式。
- 按住 vol- 鍵開機，進入 fastboot 模式。
- 按住 vol+ 鍵及 vol- 鍵開機，進入 edl（Emergency Download）模式。
高通方案的Android設備主要有以下幾種開機模式，Android、EDL、Fastboot、Recovery和FFBM，其進入及退出的方式如下表。
| 開機模式 | 屏幕顯示 | 冷啓動 | 熱啓動 | 按鍵退出 | 命令退出 |
|---|---|---|---|---|---|
| Android/Normal | Android界面 | 按Power鍵 | adb reboot | 手機短按，VR長按Power鍵 | adb shell reboot -p(關機) |
| Recovery/OTA/卡刷 | Recovery界面 | 按住OK鍵(Vol+) 再按Power鍵 |
adb reboot recovery | 長按Power鍵重啓 | adb reboot |
| Fastboot/線刷 | Fastboot界面 | 按住BACK鍵(Vol-) 再按Power鍵 |
adb reboot bootloader | 長按Power鍵重啓 | fastboot reboot fastboot continue(resuming boot) |
| FFBM/Fast Factory/廠測/半開機 | 顯示測試列表 | misc分區頭部爲ffbm時 按Power鍵 |
misc分區頭部爲ffbm時，adb reboot | 長按Power鍵重啓依然進入FFBM | 唯一退出方式擦除misc分區 |
| EDL/緊急下載/9008/磚頭/裸板 | 無顯示,黑屏 | 同時按住OK鍵(Vol+)和BACK鍵(Vol-) 再按Power鍵 |
adb reboot edl fastboot reboot emergency |
長按Power鍵重啓 | 無 |
refs:
https://nihil.cc/posts/qualcomm_edl_key/
https://www.cnblogs.com/schips/p/ways_to_enter_debug_mode_in_qualcoom_android_device.html
https://blog.csdn.net/jinron10/article/details/104691123
fastboot 刷機腳本：flash-all.sh
https://gist.github.com/Lomeli12/73825a287d3cf60414e244aece9b6bdf
#!/bin/bash reset set +x echo "------- LE2117 to LE2115 Conversion Bash Script by Lomeli12@xda -------" echo "Please make sure you are in bootloader, your screen should say \"Fastboot Mode\" in red." echo "You should be using the latest Google platform tools from your system's package manager (Apt, Yay, Brew, Scoop, etc)." echo -e "Do not continue if you are unsure. \n" # Make sure the user knows the risk and wants to continue while true; do read -p "Are you SURE you want to continue? Your warranty will be void and there's always the possibility you can soft-brick your phone (Y/N) " yn case $yn in [Yy]* ) break ;; [Nn]* ) echo "Conversion canceled" exit ;; esac done # Check if fastboot exists. If not, inform the user how to install it if [ -z $(which fastboot) ]; then echo "Something went wrong!" echo "Please install Google Platform tools to get fastboot." echo "Debian/Ubuntu: apt install android-tools-fastboot" echo "macOS: brew install android-platform-tools" echo "Windows: scoop install adb" echo "Arch: AUR android-sdk-platform-tools (yay -S android-sdk-platform-tools)" echo "Conversion canceled" exit fi # Double check we have all the required images files=( *."img" ) if [ ${#files[@]} -lt 34 ]; then echo "Something went wrong!" echo "Your working directory does not contain .img files. Make sure you are executing this script from the payload output directory (where all the .img files are)" echo "Conversion canceled" exit fi # Begin flashing. Cross your fingers nothing goes wrong echo "Flashing... Your device will reboot a few times, don't panic" echo "When reporting errors, make sure to include the output of \"fastboot --version\" and any outputs from this script." set -x fastboot flash dtbo dtbo.img fastboot flash splash splash.img fastboot flash modem modem.img fastboot flash oplusstanvbk oplusstanvbk.img fastboot flash oplus_sec oplus_sec.img fastboot --disable-verity flash vbmeta vbmeta.img fastboot --disable-verity flash vbmeta_system vbmeta_system.img fastboot --disable-verity flash vbmeta_vendor vbmeta_vendor.img fastboot reboot fastboot fastboot flash aop aop.img fastboot flash bluetooth bluetooth.img fastboot flash dsp dsp.img fastboot flash dtbo dtbo.img fastboot flash splash splash.img fastboot flash modem modem.img fastboot flash oplusstanvbk oplusstanvbk.img fastboot flash qupfw qupfw.img fastboot flash oplus_sec oplus_sec.img fastboot flash multiimgoem multiimgoem.img fastboot flash uefisecapp uefisecapp.img fastboot flash abl abl.img fastboot flash bluetooth bluetooth.img fastboot flash cpucp cpucp.img fastboot flash devcfg devcfg.img fastboot flash featenabler featenabler.img fastboot flash hyp hyp.img fastboot flash imagefv imagefv.img fastboot flash keymaster keymaster.img fastboot flash qweslicstore qweslicstore.img fastboot flash shrm shrm.img fastboot flash tz tz.img fastboot flash vendor_boot vendor_boot.img fastboot flash vm-bootsys vm-bootsys.img fastboot flash xbl xbl.img fastboot flash xbl_config xbl_config.img fastboot reboot fastboot fastboot flash product product.img fastboot flash system system.img fastboot flash system_ext system_ext.img fastboot flash vendor vendor.img fastboot flash odm odm.img fastboot reboot bootloader sleep 25 fastboot -w set +x echo -e "Done! \nPlease reboot to recovery via the menus and wipe everything prior to boot" read -p "Press any key to continue..."