Samsung Odin mode: getting in, reading it and getting out
Odin mode (Samsung also calls it Download mode) is the screen a Galaxy phone or tablet shows when it waits for firmware from a PC. Most people land on it on purpose before a flash. Plenty land on it by accident and want to know how to leave. Both cases are below, together with what the small text in the corner of the screen actually tells you about the device.
Key combinations by device generation
Turn the device off completely first. If the screen is frozen, hold Volume Down and the side key for about ten seconds until it goes black. Then use the combination for your hardware:
| Hardware | Examples | Combination |
|---|---|---|
| No Home or Bixby key (2019 on) | Galaxy S20 to S25, A15, A55, Z Fold, Tab S9 | Hold Volume Up and Volume Down together, then plug in a USB cable that is connected to a PC |
| Separate Bixby key | S8, S9, S10, Note 8, Note 9 | Hold Volume Down and Bixby, then press and hold Power |
| Physical Home button | S7 and older, J series, A 2017, older Tabs | Hold Volume Down, Home and Power together |
On the current generation the cable is part of the combination. Plugging it into a wall charger does not work on most models: the phone needs the data connection to a computer.
Two other routes skip the buttons. From the recovery menu, "Reboot to bootloader" lands in Odin mode on
Samsung devices. And on a phone that still boots, with USB debugging on, adb reboot download
does the same from a PC.
Searches like "A51 odin mode" or "S8 odin mode" have the same answer as the table: find the row for the hardware, not the model. The Galaxy A51 has no Home or Bixby key, so it is the first row; the S8 has a Bixby key, so it is the second.
The warning screen
Before Odin mode itself, a blue or black screen with a yellow triangle explains that custom OS can cause problems. It offers three choices on current devices:
- Volume Up, short press: continue to Odin mode.
- Volume Up, long press: the device unlock mode, used to unlock the bootloader. Only on models where the bootloader can be unlocked, and it wipes the phone. Not what you want for a normal flash.
- Volume Down: cancel and restart into Android.
After the short press the screen shows a large Android icon or a "Downloading..." label with the line "Do not turn off target". That is the device saying it is ready. Nothing is being written yet, and nothing will be until Odin on the PC sends a file and you press Start.
The status lines, one by one
The small text in the top left is the most useful part of the screen. The exact set of lines depends on the model and the year, but these are the ones that matter:
| Line | Normal value | What it tells you |
|---|---|---|
| PRODUCT NAME | SM-S928B | The real model number, read from the board. Trust it over the box or the back cover when picking firmware. |
| CURRENT BINARY | Samsung Official | "Custom" means something unofficial (a recovery, a patched boot image) is installed. Older models show the same as SYSTEM STATUS. |
| FRP LOCK | ON or OFF | ON when a Google account is signed in. It blocks unofficial software, not stock firmware. |
| OEM LOCK | ON (L) | The bootloader lock. OFF (U) means it has been unlocked. |
| KG STATE (RMM STATE on 2017 to 2018 models) | Checking, Completed | Knox Guard. Prenormal, Active or Locked mean the device is under a remote lock policy, often a financed or company phone, and unofficial binaries are refused. |
| WARRANTY VOID | 0 (0x0000) | The Knox fuse. Any value other than 0 means unofficial software was run at some point. It never goes back to 0. |
| RP SWREV or AP SWREV | B:6 K:5 S:6 | Anti-rollback counters. B is the bootloader binary, the same digit you see in the build number. Firmware with a lower one fails with "SW REV CHECK FAIL". |
The first line names the mode. "ODIN MODE (HIGH SPEED)" and similar labels in brackets describe how the loader runs the USB transfer; they are not an error and need no action. Some newer models show only "Downloading" in the middle of the screen. All of these are the same mode.
Before you download firmware, read PRODUCT NAME and the B value. Together they tell you exactly which builds on your model's page will install. The firmware version guide explains how to match that digit against a build number.
How to exit Odin mode
Unplug the USB cable, then hold Volume Down and the side (Power) key together for seven to ten seconds. The screen goes black and the device restarts into Android. On models with a Home button, hold Volume Down, Home and Power instead.
If you are still on the yellow warning screen, Volume Down alone cancels and restarts.
Leaving Odin mode this way changes nothing on the device. No data is lost as long as no flash was started.
Stuck in Odin mode
"Stuck" covers three different situations, and only one of them is serious.
It comes back to Odin mode after every restart
Usually a volume key is pressed: a tight case, a bent button or a key that sticks after a drop. Take the case off, press each volume key a few times and restart. A USB cable left plugged into a PC can also send newer phones straight back in, so unplug it before the restart.
"Downloading" sits there for hours with nothing happening
That is normal if no PC is sending anything. The phone does not time out on its own. Exit with Volume Down and Power as above.
A flash was interrupted and the phone will not boot
If a flash stopped halfway (cable pulled, PC asleep, an Odin error), the restart lands on Odin mode again or on a screen saying an error occurred while updating the device software. Android is incomplete, so the only fix is to finish the job: flash the full firmware for the exact model and its current binary. The firmware upgrade error guide covers that screen step by step.
A screen that says "UPLOAD MODE" is something else. It appears after a system crash and holds a memory dump for diagnostics. Exit it the same way, with Volume Down and Power. If it returns on every boot, the installed firmware is damaged and reinstalling it usually helps.
The phone is in Odin mode, the PC sees nothing
The phone side is fine at this point. The problem is between the cable and Windows:
- Open Device Manager. A working link shows "SAMSUNG Mobile USB Modem" under Modems or Ports. An unknown device or nothing at all points to the driver.
- Install the Samsung USB driver for mobile phones and restart the PC once.
- Quit Smart Switch and anything else that talks to phones; it can hold the port.
- Swap the cable. Many cables bundled with chargers carry power only.
- Use a USB port on the back of a desktop, not a hub or the front panel.
Odin itself, the right version for your device and the meaning of each log message are covered in the Odin download guide.
FAQ
Is Odin mode the same as recovery mode?
No. Recovery mode (Volume Up and Power on most models) is a small menu for wiping cache, factory reset and applying updates from storage. Odin mode only waits for a PC.
Does entering Odin mode void the warranty or trip Knox?
No. Entering and leaving it is harmless. Knox is tripped only by running unofficial software.
Can I get into Odin mode with broken volume keys?
Only through a working Android with USB debugging (adb reboot download) or through recovery if
that is still reachable. Otherwise the keys have to be repaired first.
How long can the phone stay in Odin mode?
As long as the battery lasts. The screen stays on, so a phone left there overnight will be flat by morning.
Related guides
- Odin download for Samsung: versions, Odin mode and errors. Which Odin version to use, how to get into Odin mode and what the Odin log errors mean.
- Samsung bootloop fix: phone stuck restarting on the logo. Steps from the least to the most invasive, from a forced restart to a full firmware reinstall.
- Fix "Firmware upgrade encountered an issue" on Samsung. What the Smart Switch recovery screen means and how to get the phone or tablet working again.
- How to flash Samsung firmware with Odin. The full step-by-step flashing guide.