| Method | Trigger | Verified? | |--------|---------|------------| | | Volume Up + Down while inserting USB (with no valid bootloader) | Yes (Odin/Heimdall) | | BootROM recovery | Corrupted bootloader forces iROM to wait for USB | Yes (if host key matches) | | Forced via UART | Sending G 0x4000 over serial console | Conditional |
The message typically appears on Samsung smartphones (which use Exynos processors) when the device enters a low-level bootloader or recovery state, often referred to as Download Mode or Odin Mode .
This simulates pulling the battery and clears the temporary state. Hold the and Volume Down buttons simultaneously. Keep holding for at least 10–15 seconds . Release once the Samsung logo appears. 2. Check the Buttons
The device awaits specific handshake commands and raw firmware binaries from authorized computer software to re-partition or re-flash the storage media. Common Causes for the Interface to Appear exynos usb device4000 verified
Understanding the "Exynos USB Device(4.0.0.0) Verified" Status: A Complete Technical Guide
: The system failed to boot and defaulted to this "emergency" connection state.
heimdall flash --usb-device 4000 --BOOTLOADER sboot.bin --RECOVERY twrp.img | Method | Trigger | Verified
The secondary bootloader (u-boot or aboot) and recovery modes are bypassed.
Download the official Samsung Android USB Driver package from the developer portal.
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The flashing software has successfully sent a preliminary command packet to the device, and the Exynos chip responded with the correct cryptographic handshake, confirming secure communication is open.
You will generally encounter this in the following scenarios:
Press and hold the and Power (Side) keys simultaneously. Keep the buttons held firmly for at least 15 to 20 seconds.