I have a Wiko Jerry phone, after some bootloader install has already happened on it.
Volume down + poweron gives this:
It looks like some test firmware, but it has no name/version info.
What is that?
What bootloader/recovery firmware can it be?
Question
Answer
As comment says, it is the factory test firmware of this specific model (wiko jerry 1). There is no documentation, or practically anything for it. It is used mostly by the manufacturer, to initially test/setup the device after production; although it is also an useful test tool in the case of mysterious hardware problems.
Q & A
LineageOS: list of running applications
Why does Android OS data usage not count?
Accessing battery usage graph on Android 8
How to stop continue optimise app in Yu Yuphoria?
"Google keeps stopping" after Android Oreo update
How to disable autocomplete in Chrome for specific sites
How to unhide a contact address in Google Maps?
Is it safe to buy a second hand/opened box Android phone
How to put Android phone into "deep sleep" using Tasker?
4G network compatibility in France
Locked out of secure startup
(Android) Launch app activity shortcuts from the command line?
Phone calls seems to be from viber while they are not!
What do all these letters/numbers in early Samsung ROM file name mean?
Application installation fails in play store
Remove user account in Android 5.1
Yu Yuphoria YU5010 is stuck in "Optimize apps # of #" loop. Need to recover data
How can I control video playback on another device?
Is Android vulnerable to the BlueBorne attack found in Linux?
Is it possible to gain complete remote access of another Android phone from my phone?
Why does Android OS data usage not count?
Accessing battery usage graph on Android 8
How to stop continue optimise app in Yu Yuphoria?
"Google keeps stopping" after Android Oreo update
How to disable autocomplete in Chrome for specific sites
How to unhide a contact address in Google Maps?
Is it safe to buy a second hand/opened box Android phone
How to put Android phone into "deep sleep" using Tasker?
4G network compatibility in France
Locked out of secure startup
(Android) Launch app activity shortcuts from the command line?
Phone calls seems to be from viber while they are not!
What do all these letters/numbers in early Samsung ROM file name mean?
Application installation fails in play store
Remove user account in Android 5.1
Yu Yuphoria YU5010 is stuck in "Optimize apps # of #" loop. Need to recover data
How can I control video playback on another device?
Is Android vulnerable to the BlueBorne attack found in Linux?
Is it possible to gain complete remote access of another Android phone from my phone?
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