Huawei Mate 10 ALP-L29 EMUI 9 firmware is now available for Latin America.  The firmware version is 221. This update is only applicable to phones with cust version C605. Android 9 is running EMUI9 on top. This is official stock firmware from Huawei and can be installed by following the official method.  If you have previously installed EMUI9.1 and want to downgrade to EMUI9 then it can be helpful. You can either use sd card/OTG to install it or any 3rd party tool can be used. This firmware can help unbrick your phone.

Huawei Mate 10 Firmware Details:

• Android Version: 9.0
• EMUI Version: EMUI 9.0
• Build Number:ALP-L29 9.0.0.221(C605E2R1P11T8)
• Supported Model: ALP-L29C605 (Latin America)
• Update Type: Official Stock Firmware
• Download Link: Click Here
• Password=ministryofsolutions.com ALP-L29
• Tip: Use Internet download manager for faster download speed

Installation Guide:

• Backup all important data from the phone
• Charge the battery up to 60%
• Get a micro SD card / OTG USB with 8GB of free space
• Extract the downloaded firmware zip file (password=ministryofsolutions.com ALP-L29)
• Then copy the dload folder to your SD card / OTG USB
• Then power off the phone and disconnect from pc. Hold volume up, volume down, and power, keep holding until the update starts.

Note: Everything you do at your responsibility, this guide is provided for free without any guarantee.