Q1. Why does my Mate 20 flash abort at 5%?

ProjectMenu version or CUST mismatch. Always double-check and match builds and check forum reports for error-specific fixes!

Q2. Is it safe to cross-flash L29 and AL00 variants?

No—AL00 (China) and L29/L09 (global) have hardware, band, and encryption differences not visible externally. Cross-flash disables modems and can brick.

Q3. What does BoardDump/Board Software do?

It wipes user partitions and NV, restoring a “deep” layer of hardware booting. Only use when a device won’t power at all; risk of SN/IMEI loss without repair tools.

Q4. Can I upgrade EMUI 9 to 10/10.1 using these packages?

Yes, if region and partitioning matches, but always go step by step. Community users highlight modem and camera bugs when skipping major EMUI builds.

Huawei Mate 20 (HMA-L29, L09, AL00, AL00B) Official Stock Firmware Download (EMUI 9

The Huawei Mate 20 HMA-series—including global (HMA-L29, L09), region-customized (L29CA, AL00), and board-level variants—ships with a powerful Kirin 980 chipset and EMUI 9–10.1. Due to dissimilar bootloader locks, region-locked partition tables, and distinct CUST/region builds (C605, C432, C652, C00, etc.), using the correct firmware is critical for a successful flash and to avoid permanent hardware loss. Community repair specialists and end users repeatedly warn against CUST/region mismatches, especially with “board software” for unbrick or demo-to-retail conversion.

CRUCIAL WARNING:

Firmware region and partition encryption are strict. Flashing C605 (LATAM) to C432 or board dumps to an active retail device can cause irrecoverable loss of phone functions, invalid signature, camera/fingerprint sensor failure, or demo lock.
Board software/BoardDump is for “deep repair” and can wipe IMEI/NV info. Only attempt if unbricking a device that won’t boot at all—never for normal upgrades.
Chinese AL00/AL00B and global L29/L09 firmwares are non-interchangeable; attempting a cross-flash commonly brick bands, modem, or disables future OTA.
After flashing, always check for proper SIM, NFC, fingerprint, and camera operation. China builds often lack Google services and L29CA is a “demo”/open market model needing extra care.

Prerequisites: Before You Begin

Click Here for the Essential Pre-Flashing Checklist

Backup All User Data: Flashing any firmware or board dump will wipe apps, photos, and device accounts. Use HiSuite or cloud sync before proceeding.
Model & CUST Verification: Dial *#*#2846579#*#* to check ProjectMenu -> “Versions” for model+region build. Always match download to your exact code.
Fast-FAT32 SD Card: For dload, use a high-quality SD card (8GB+).
Charge to at Least 65%: Avoid any accidental shutoff during flashing.
Install Proper USB Drivers: Download Huawei USB Drivers and HiSuite for Windows.

Huawei Mate 20 Firmware Details

Device Family: Huawei Mate 20 HMA – HMA-L29, HMA-L09, HMA-L29CA, HMA-AL00, HMA-AL00B
Chipset: HiSilicon Kirin 980 (7nm, Octa-core CPU, Mali-G76 MP10 GPU)
Android/EMUI Version Range: Android 9 (EMUI 9.0/9.1), Android 10 (EMUI 10/10.1), region-dependent
Partition/Region Codes: C605 (LATAM), C432 (Europe/global), C652 (demo/open), C00 (China)
Unbrick/Deep Repair: BoardDump/Board Software—use for non-booting devices only
Battery: 4,000 mAh non-removable

Required Tools & Downloads

File / Tool	Download Link
Huawei HiSuite	Download HiSuite
Huawei USB Drivers	Download USB Drivers
High-Speed microSD Card (FAT32)	—

Huawei Mate 20 Firmware & BoardDump Download Table

Model	Android	Region	Filename	Build	Size	Download	Notes
HMA-L29	10.0	LATAM (C605)	HMA-L29 10.0.0.210(C605E4R1P5)_Firmware_EMUI10.0.0_05015KHL.zip	10.0.0.210 C605E4R1P5	4.19GB	Google Drive	Dload
HMA-L29	9.0 (EMUI 9)	General/Board	Huawei_Mate_20_HMA-L29_BD_1.0.0.68_9.0.0_R3_EMUI9.0.0_05022KJE_9.0_HMT.zip	BD_1.0.0.68 9.0.0_R3	2.02GB	Google Drive	BoardDump
HMA-L29	10.0	Europe (C432)	HMA-L29 10.0.0.180(C432E8R1P5).zip	10.0.0.180 C432E8R1P5	4.1GB	AndroidFileHost	Dload
HMA-L29	10.1	Europe (C432)	HMA-L29 10.1.0.288(C432E8R1P5).zip	10.1.0.288 C432E8R1P5	4.4GB	AndroidFileHost	Dload
HMA-L29CA	9.0	C652 (Special/Global Demo)	HMA-L29 Hima-L29CA 9.0.0.108D(C652E12R1P16) Firmware 9.0.0 r3 EMUI9.0.0 05015KLL.zip	9.0.0.108D(C652)	5.84GB	Google Drive	Dload
HMA-L09	9.0 (EMUI 9)	Board Software	Huawei_Mate_20_HMA-L09_BD_1.0.0.68_9.0.0_R3_EMUI9.0.0_05022KJE_9.0_HMT.zip	BD_1.0.0.68	2.02GB	Google Drive	BoardDump
HMA-AL00	9.0 (EMUI 9)	China	Huawei_Mate_20_HMA-AL00_Hima-AL00B-BD_1.0.0.43_Board_Software_General_9.0.0_R3_EMUI_9.0.0_05022KJE_HMT.zip	1.0.0.43	1.98GB	Google Drive	Board Software/Unbrick
HMA-L29CA	10.1	Special/Global Demo	Huawei_Mate_20_Hima-L29CA_10.1.0.328_C55E9R1P5_Dload.zip	10.1.0.328_C55E9R1P5	4.62GB	Google Drive	Dload
HMA-AL00	10.0	China	Huawei_Mate_20_Hima-AL00_10.0.0.188_C00_EMUI10.0.0_Dload.zip	10.0.0.188 C00	4.73GB	Google Drive	Dload
HMA-AL00B	9.0	China/Board Software	Huawei_Mate_20_Hima-AL00B_BD_1.0.0.68_9.0.0_R3_EMUI9.0.0_05022KJE_9.0_HMT.zip	BD_1.0.0.68	2.02GB	Google Drive	BoardDump
HMA-AL00	10.0	China	HMA-AL00_Hima-AL00_10.0.0.188_C00_all_cn_Firmware_EMUI10.0.0.rar	10.0.0.188 C00	4.73GB	Google Drive	Dload, Full system

Quick Flashing Guide (All Supported Methods)

Download and extract the matching ZIP/RAR for your device’s exact model+region (e.g., HMA-L29 10.0.0.210(C605E4R1P5)_Firmware_EMUI10.0.0_05015KHL.zip).
Copy UPDATE.APP to a folder named dload at the root of your microSD card.
Fully power off your phone, insert SD card, then hold Volume Up + Volume Down + Power for dload flashing. For “Board Software,” follow included unbrick instructions.
Wait (8–15 minutes) for the update to complete and phone to reboot. Verify all hardware (SIM, WiFi, camera, NFC).
If a BoardDump flash does not restore boot, advanced repair (USB-to-UART, service tools) is required. Back up NV/IMEI before attempting if possible!

For a step-by-step guide (with pictures and troubleshooting), see: Full Tutorial: How to Flash Firmware to Huawei Smartphone

Frequently Asked Questions (FAQs)

Q1. Why does my Mate 20 flash abort at 5%?: ProjectMenu version or CUST mismatch. Always double-check and match builds and check forum reports for error-specific fixes!
Q2. Is it safe to cross-flash L29 and AL00 variants?: No—AL00 (China) and L29/L09 (global) have hardware, band, and encryption differences not visible externally. Cross-flash disables modems and can brick.
Q3. What does BoardDump/Board Software do?: It wipes user partitions and NV, restoring a “deep” layer of hardware booting. Only use when a device won’t power at all; risk of SN/IMEI loss without repair tools.
Q4. Can I upgrade EMUI 9 to 10/10.1 using these packages?: Yes, if region and partitioning matches, but always go step by step. Community users highlight modem and camera bugs when skipping major EMUI builds.