Fastboot detects phone in the fastboot mode but not when phone is on

Question

I'm trying to flash a custom recovery image with fastboot flash recovery recovery.img but it can't find the image, hence I'm powering it on and getting into location where the image is to execute the command. The problem is fastboot doesn't detect the phone when the phone is on but ADB does detect it. How can I troubleshoot this ?


— mr_incredible | Sources

Answer

Fastboot images have to be stored on the PC where you execute the fastboot command not on the device.



Therefore the common process is:




  1. PC: Download the image to be flashed

  2. Boot the device into bootloader/fastboot mode

  3. Connect the device to the PC via USB

  4. Execute on the PC fastboot flash <target_partition> <path to the image on the PC>



Flashing firmware images that are stored as image file on the device is usually a job for a recovery ROM such as TWRP.


— Robert | Sources

Q & A

Phone keeps going into Fastboot after water damage
Android Chrome shortcuts are grayed out after transfer with "Smart Switch". How come?
Is 3G network always available when 4G network is?
Where is the WiFi MAC randomization data stored?
Native Linux on Android's SOCs
Unable to inspect nested directories from computer
What is the location of recorded call files from Call Recorder?
How to make Android device visible to Bonjour / Zeroconf with .local name?
How can I copy entire chain of text messages (not just a single one) with the stock Android messages app?
Can I make the USB connection default to file transfer only for my computer?
Why can I view files from "Internal Storage" WITHOUT entering password either in OrangeFox recovery or via USB cable on PC?
Permissions denied but still the app can use it
Connection to DoT server is not retried
How can I increase the maximum number of background apps on Android 10+?
Make a phone call in one SIM and simultaneously browse with the other
How to exclude a specific destination IP from VPN?
I'm getting about 40Mbps transfer rater over WiFi (from phone to Linux). Is it that slow because of the SDCard on the phone?
How does the Android emulator emulate the RAM?
Modifications of vendor image on Android 10 - alternative idea
How to stop screen from lighting up?

Topics

2D Engines   3D Engines   9-Patch   Action Bars   Activities   ADB   Advertisements   Analytics   Animations   ANR   AOP   API   APK   APT   Architecture   Audio   Autocomplete   Background Processing   Backward Compatibility   Badges   Bar Codes   Benchmarking   Bitmaps   Bluetooth   Blur Effects   Bread Crumbs   BRMS   Browser Extensions   Build Systems   Bundles   Buttons   Caching   Camera   Canvas   Cards   Carousels   Changelog   Checkboxes   Cloud Storages   Color Analysis   Color Pickers   Colors   Comet/Push   Compass Sensors   Conferences   Content Providers   Continuous Integration   Crash Reports   Credit Cards   Credits   CSV   Curl/Flip   Data Binding   Data Generators   Data Structures   Database   Database Browsers   Date &   Debugging   Decompilers   Deep Links   Dependency Injections   Design   Design Patterns   Dex   Dialogs   Distributed Computing   Distribution Platforms   Download Managers   Drawables   Emoji   Emulators   EPUB   Equalizers &   Event Buses   Exception Handling   Face Recognition   Feedback &   File System   File/Directory   Fingerprint   Floating Action   Fonts   Forms   Fragments   FRP   FSM   Functional Programming   Gamepads   Games   Geocaching   Gestures   GIF   Glow Pad   Gradle Plugins   Graphics   Grid Views   Highlighting   HTML   HTTP Mocking   Icons   IDE   IDE Plugins   Image Croppers   Image Loaders   Image Pickers   Image Processing   Image Views   Instrumentation   Intents   Job Schedulers   JSON   Keyboard   Kotlin   Layouts   Library Demos   List View   List Views   Localization   Location   Lock Patterns   Logcat   Logging   Mails   Maps   Markdown   Mathematics   Maven Plugins   MBaaS   Media   Menus   Messaging   MIME   Mobile Web   Native Image   Navigation   NDK   Networking   NFC   NoSQL   Number Pickers   OAuth   Object Mocking   OCR Engines   OpenGL   ORM   Other Pickers   Parallax List   Parcelables   Particle Systems   Password Inputs   PDF   Permissions   Physics Engines   Platforms   Plugin Frameworks   Preferences   Progress Indicators   ProGuard   Properties   Protocol Buffer   Pull To   Purchases   Push/Pull   QR Codes   Quick Return   Radio Buttons   Range Bars   Ratings   Recycler Views   Resources   REST   Ripple Effects   RSS   Screenshots   Scripting   Scroll Views   SDK   Search Inputs   Security   Sensors   Services   Showcase Views   Signatures   Sliding Panels   Snackbars   SOAP   Social Networks   Spannable   Spinners   Splash Screens   SSH   Static Analysis   Status Bars   Styling   SVG   System   Tags   Task Managers   TDD &   Template Engines   Testing   Testing Tools   Text Formatting   Text Views   Text Watchers   Text-to   Toasts   Toolkits For   Tools   Tooltips   Trainings   TV   Twitter   Updaters   USB   User Stories   Utils   Validation   Video   View Adapters   View Pagers   Views   Watch Face   Wearable Data   Wearables   Weather   Web Tools   Web Views   WebRTC   WebSockets   Wheel Widgets   Wi-Fi   Widgets   Windows   Wizards   XML   XMPP   YAML   ZIP Codes