POCO F8 Ultra (myron) Global Flash File Download | Official Stock ROM & Firmware

Whether your POCO F8 (codename: myron) is soft-bricked, hanging on the boot logo, or you just want to move back to stock MIUI/HyperOS after trying a custom ROM, this guide has what you need — every fastboot and recovery firmware build for this device, reliable download servers, and a full flashing walkthrough.

Before you pick a file: fastboot flashing means a full reset, so use it when the phone is genuinely stuck or dead. If you're just trying to repair the system without losing data, go with the recovery ROM instead.

Device Overview

BrandXiaomi
DevicePOCO F8
Codenamemyron
ChipsetQualcomm SM8850-AC Snapdragon 8 Elite Gen 5
Approx. Total Size11.6 GB
Recommended ToolMi Flash Tool

Fastboot vs Recovery ROM — Which One Do You Need?

People often download the wrong file the first time, so here's the short version. A fastboot ROM is a complete firmware package meant to be flashed through Mi Flash Tool on a PC — it wipes the device and reinstalls everything from scratch, which makes it the go-to fix for bootloops, dead boot, or a phone that refuses to start. A recovery ROM, on the other hand, is flashed through the phone's built-in Mi Recovery menu and is generally used to update, downgrade, or repair the system without touching your personal data (though a backup is still recommended).

🔹 Fastboot ROM

myron_global_images_OS3.0.13.0.WPMMIXM_20260318.0000.00_16.0_global
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronFastboot ROMOS3.0.13.0.WPMMIXM16.011.5 GB
myron_global_images_OS3.0.12.0.WPMMIXM_20260113.0000.00_16.0_global
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronFastboot ROMOS3.0.12.0.WPMMIXM16.011.4 GB
myron_global_images_OS3.0.11.0.WPMMIXM_20251219.0000.00_16.0_global
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronFastboot ROMOS3.0.11.0.WPMMIXM16.011.4 GB
myron_global_images_OS3.0.9.0.WPMMIXM_20251205.0000.00_16.0_global
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronFastboot ROMOS3.0.9.0.WPMMIXM16.011.4 GB
myron_global_images_OS3.0.8.0.WPMMIXM_20251124.0000.00_16.0_global
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronFastboot ROMOS3.0.8.0.WPMMIXM16.011.4 GB

🔹 Recovery ROM

myron_global-ota_full-OS3.0.301.0.WPMMIXM-user-16.0-008e85754a
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.301.0.WPMMIXM169 GB
myron_global-ota_full-OS3.0.13.0.WPMMIXM-user-16.0-8a1bb56c94
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.13.0.WPMMIXM168.8 GB
myron_global-ota_full-OS3.0.12.0.WPMMIXM-user-16.0-28c6570898
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.12.0.WPMMIXM168.8
myron_global-ota_full-OS3.0.11.0.WPMMIXM-user-16.0-5a7c7ae9d1
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.11.0.WPMMIXM168.8 GB
myron_global-ota_full-OS3.0.9.0.WPMMIXM-user-16.0-7830dbd924
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.9.0.WPMMIXM168.7 GB
myron_global-ota_full-OS3.0.8.0.WPMMIXM-user-16.0-7ab77c059d
Device NameCodenameTypeMIUI VersionAndroid OSSize
POCO F8myronRecovery ROMOS3.0.8.0.WPMMIXM168.7 GB
Got multiple parts to download? Save them all in the same folder first. The archive will fail to extract if any single part is missing.

Tools You'll Need

Make sure the flashing tool and correct USB driver are already installed on your computer before you begin. More often than not, a flash fails because of a driver problem, not the firmware itself.

How to Flash POCO F8 Using Mi Flash Tool

  1. Download the fastboot ROM and extract it fully — don't skip extraction, Mi Flash Tool won't read a zipped folder.
  2. Install Mi Flash Tool from the link above and open it.
  3. Power off the phone, then hold Volume Down + Power together to boot into Fastboot mode.
  4. Connect the phone to your PC using a good-quality USB cable — cheap cables are a common cause of connection drops mid-flash.
  5. In Mi Flash Tool, click "Select" and point it to the extracted firmware folder.
  6. Once the COM port is detected, hit "Flash" and let it run — don't disconnect the phone during this step.
  7. The phone will reboot on its own once flashing finishes. First boot can take a few minutes longer than usual, so give it time.

Common Flashing Errors and How to Fix Them

"Auth file needed" — this usually shows up when the connected Mi account isn't authorized for flashing. You'll need an authorized account, or a test-point based flash for unlocked devices.

"COM port not detected" — almost always a driver issue. Install the Qualcomm/MediaTek USB driver from the link above, then put the phone back into EDL or Fastboot mode and try again.

"Flashing failed" partway through — try a different USB cable or port first; if that doesn't help, re-extract the firmware in case a file got corrupted during download.

Frequently Asked Questions

Is this firmware official?
Yes, these are unmodified stock builds pulled directly from Xiaomi's own update servers.

Will flashing delete my data?
Fastboot flashing wipes the device, so back up anything important first. Recovery flashing is less destructive but a backup is still a good idea.

My model number doesn't match exactly — can I still use this?
Stick to the exact codename (myron) shown in the table above. Flashing firmware built for a different region or variant can leave the device unusable.

Topic Cover:
  1. POCO F8 Ultra Flash File
  2. POCO F8 Ultra Stock ROM
  3. POCO F8 Ultra Firmware
  4. POCO F8 Ultra File
  5. POCO F8 Ultra Fastboot ROM
  6. POCO F8 Ultra Recovery ROM
  7. myron Flash File
  8. myron Stock ROM
  9. myron Firmware
  10. myron File
  11. myron Fastboot ROM
  12. myron Recovery ROM
  13. 25102RKBEC Flash File
  14. 25102RKBEC Stock ROM
  15. 25102RKBEC Firmware
  16. 25102RKBEC File
  17. 25102RKBEC Fastboot ROM
  18. 25102RKBEC Recovery ROM
  19. 25102RKBEC Model Name : POCO F8 Ultra (myron) Global
  20. 25102RK69C Flash File
  21. 25102RK69C Stock ROM
  22. 25102RK69C Firmware
  23. 25102RK69C File
  24. 25102RK69C Fastboot ROM
  25. 25102RK69C Recovery ROM
  26. 25102RK69C Model Name : POCO F8 Ultra (myron) Global
  27. 25102PCBEG Flash File
  28. 25102PCBEG Stock ROM
  29. 25102PCBEG Firmware
  30. 25102PCBEG File
  31. 25102PCBEG Fastboot ROM
  32. 25102PCBEG Recovery ROM
  33. 25102PCBEG Model Name : POCO F8 Ultra (myron) Global

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