If your Redmi K90 Pro Max (codename: myron) is stuck on the Mi logo, stuck in a bootloop, showing a dead boot screen, or you flashed a custom ROM and now want to get back to MIUI/HyperOS, you're in the right place. Below you'll find every available fastboot and recovery firmware version for this device, along with working download servers and a flashing walkthrough that doesn't skip steps.
One thing worth knowing upfront — fastboot ROM flashing wipes the phone completely, so only go that route if you're fine starting fresh. For a lighter repair that doesn't touch your files, the recovery ROM is normally the better choice.
Device Overview
| Brand | Xiaomi |
|---|
| Device | Redmi K90 Pro Max |
|---|
| Codename | myron |
|---|
| Chipset | Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 |
|---|
| Approx. Total Size | 11.5 GB |
|---|
| Recommended Tool | Mi 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 Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Fastboot ROM | OS3.0.13.0.WPMMIXM | 16.0 | 11.5 GB |
myron_global_images_OS3.0.12.0.WPMMIXM_20260113.0000.00_16.0_global
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Fastboot ROM | OS3.0.12.0.WPMMIXM | 16.0 | 11.4 GB |
myron_global_images_OS3.0.11.0.WPMMIXM_20251219.0000.00_16.0_global
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Fastboot ROM | OS3.0.11.0.WPMMIXM | 16.0 | 11.4 GB |
myron_global_images_OS3.0.9.0.WPMMIXM_20251205.0000.00_16.0_global
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Fastboot ROM | OS3.0.9.0.WPMMIXM | 16.0 | 11.4 GB |
myron_global_images_OS3.0.8.0.WPMMIXM_20251124.0000.00_16.0_global
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Fastboot ROM | OS3.0.8.0.WPMMIXM | 16.0 | 11.4 GB |
🔹 Recovery ROM
myron_global-ota_full-OS3.0.301.0.WPMMIXM-user-16.0-008e85754a
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.301.0.WPMMIXM | 16 | 9.0 GB |
myron_global-ota_full-OS3.0.13.0.WPMMIXM-user-16.0-8a1bb56c94
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.13.0.WPMMIXM | 16 | 8.8 GB |
myron_global-ota_full-OS3.0.12.0.WPMMIXM-user-16.0-28c6570898
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.12.0.WPMMIXM | 16 | 8.8 GB |
myron_global-ota_full-OS3.0.11.0.WPMMIXM-user-16.0-5a7c7ae9d1
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.11.0.WPMMIXM | 16 | 8.8 GB |
myron_global-ota_full-OS3.0.9.0.WPMMIXM-user-16.0-7830dbd924
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.9.0.WPMMIXM | 16 | 8.7 GB |
myron_global-ota_full-OS3.0.8.0.WPMMIXM-user-16.0-7ab77c059d
| Device Name | Codename | Type | MIUI Version | Android OS | Size |
|---|
| Redmi K90 Pro Max | myron | Recovery ROM | OS3.0.8.0.WPMMIXM | 16 | 8.7 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
Before flashing, make sure you have the flashing tool and the correct USB driver installed on your PC — most flashing failures actually come down to a missing or outdated driver rather than the firmware itself.
How to Flash Redmi K90 Pro Max Using Mi Flash Tool
- Download the fastboot ROM and extract it fully — don't skip extraction, Mi Flash Tool won't read a zipped folder.
- Install Mi Flash Tool from the link above and open it.
- Power off the phone, then hold Volume Down + Power together to boot into Fastboot mode.
- Connect the phone to your PC using a good-quality USB cable — cheap cables are a common cause of connection drops mid-flash.
- In Mi Flash Tool, click "Select" and point it to the extracted firmware folder.
- Once the COM port is detected, hit "Flash" and let it run — don't disconnect the phone during this step.
- 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?
Always double-check the codename against myron from the table. Flashing the wrong region or variant's firmware can leave the phone unusable.
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