Crucial Warning: Pay close attention to your exact model number and chipset before downloading. The CUN-U29 uses a MediaTek MT6582 processor, whereas all CUN-Lxx, AL00, and TL00 models use the MT6735 processor — flashing an MT6735 package onto a CUN-U29 will cause a DRAM initialization error and boot failure. In SP Flash Tool, always use "Download Only"; never select "Format All + Download", which will permanently wipe your device calibration and IMEI.
Download Firmware for Huawei Y5II / Honor 5 (CUN Family)
Huawei_Y5II_CUN-L01_MT6735_05042017.zip
Full SP Flash Tool package with MT6735 scatter file.
⬇️ Download via MediaFireHuawei_Y5ii_CUN-L01_(CUN-L01C577B125_SD_Update.zip
SD Card UPDATE.APP package; place UPDATE.APP in the dload folder of an SD card.
MD5: 5dab6cf8cca14c2ef9e433ecfc445572
Huawei_Y5ii_CUN-L02_(CUN-L02C642B102).zip
Full factory package containing scatter files and partition images.
MD5: a66142c0341eeec068e587bf9583170c
Huawei_Y5ii_CUN-L02_(CUN-L02C642B102)_ROM_FlashTool.rar
Same C642B102 build as the 1 GB archive above, packaged as a dedicated SP Flash Tool RAR.
⬇️ Download via Google DriveHuawei_Y5II_CUN-L03_MT6735_C480B105d_07292017.zip
Also available via a second mirror link below — use whichever loads faster.
⬇️ Download (2 links)
Huawei_Y5II_CUN-L21_MT6735_C578B125_13042017_5.1.zip
Dual-SIM CUN-L21 variant on the C578 regional branch.
⬇️ Download via Google DriveHuawei_Y5ii_CUN-L22_(CUN-L22C567B129).zip
Earlier build release for the C567 branch.
MD5: 80f4f859eb2d87b7bd483ceb79d10ed9
Huawei_Y5ii_CUN-L22_(CUN-L22C567B130).zip
Updated maintenance release for CUN-L22 C567.
MD5: 81cf962096e0e752169edd11fef5bed9
Huawei_Y5ii_CUN-L23_MT6735_C464B124_08072016.zip
Launch-era build for the dual-SIM Latin American CUN-L23 model.
⬇️ Download via Google DriveHuawei_Y5ii_CUN-L23_(CUN-L23C464B126).zip
Updated maintenance build for CUN-L23 C464.
MD5: 80edbda1518385c8c580c2df1758551e
Huawei_Y5II_CUN-L33_MT6735_C311B105_04202017.zip
A separate archive of this build with an independently verified checksum is also listed below.
⬇️ Download via MediaFireHuawei_Y5ii_CUN-L33_(CUN-L33C311B105).zip
Same C311B105 build as above with verified MD5 checksum from the hosting repository.
MD5: 8e21d042d7ced6047744a6cd3e2f750b
Huawei_CUN-AL00_CUN-AL00C00B135_5.1.zip.rar
Standard stock ROM for the China domestic all-network edition (Honor 5).
MD5: 6ed0bd71f3209f8cd98d33360dded4ca
Honor_5_CUN-AL00_C01B134_Board_Software_China_05014JLN_OTA.zip
Factory board repair software used to unbrick deep bootloop or dead BROM states.
⬇️ Download via Google DriveCUN-TL00_C01B130.zip
China Mobile carrier-specific variant.
MD5: b0cbccc15a7d59105a9a1001c202977a
Huawei_CUN-U29_MT6582_C567B134_5.1.zip
MediaTek MT6582 32-bit package. Contains MT6582_Android_scatter.txt; do not flash on any MT6735 CUN-Lxx model.
⬇️ Download via MediaFireFlashing Overview for Huawei Y5II / Honor 5 (CUN Family)
- Confirm exact model (CUN-Lxx vs CUN-U29) and cust code (Cxxx)
- Install MediaTek USB VCOM and Preloader drivers on your PC
- For PC flashing, load MT6735 or MT6582 scatter into SP Flash Tool
- Select "Download Only" (never Format All) and connect powered-off phone
- For SD card updates, place UPDATE.APP in /dload/ and boot holding Vol Up + Vol Down + Power
Expand preparation checklist for Huawei Y5II / Honor 5 (CUN Family)
- Check the exact model number (e.g. CUN-L01, CUN-L21, CUN-U29) on the label beneath the removable battery or in Settings > About phone.
- Match your regional cust code (e.g. C577, C642, C480, C567, C464, C311) to avoid radio calibration mismatches.
- Install the MediaTek USB VCOM drivers on your PC before connecting via USB.
- Ensure your 2200 mAh battery is charged to at least 40% before flashing.
- If using an SD card update package, use a reliable FAT32-formatted microSD card.
Compatibility & Bootloader Notes
Flashing stock firmware via SP Flash Tool writes directly through MediaTek BootROM (BROM) and Preloader; it does not require an unlocked bootloader. Similarly, official Huawei dload (UPDATE.APP) SD card updates flash through stock recovery without bootloader modification.
Ready to Flash This Firmware?
Full step-by-step instructions for Huawei Y5II / Honor 5 (CUN Family), including prerequisites, error fixes, and screenshots, are on FlashGuideHub's SP Flash Tool guide.
Can also be flashed via Huawei UPDATE.APP: Open Huawei UPDATE.APP Guide →
Frequently Asked Questions
Remove the rear cover and take out the removable battery to inspect the white regulatory label. It clearly states the model number (e.g. CUN-L01, CUN-L21, CUN-U29). If the device can still boot, navigate to Settings > About phone and examine the Build number — the letters following "CUN-" indicate the model, while the "C" digits (e.g. C577, C642, C480, C567, C464) define the regional software branch.
No. The CUN-U29 is powered by a 32-bit MediaTek MT6582 processor, whereas CUN-L21 uses a 64-bit MediaTek MT6735 processor. Flashing firmware across this chipset boundary will cause a DRAM initialization error (BROM error 4032) in SP Flash Tool and will leave the phone unbootable.
An SD Update package contains an UPDATE.APP container file designed to be placed inside a folder named "dload" on a microSD card and flashed through stock recovery. An SP Flash Tool package contains raw partition images (boot.img, recovery.img, system.img) and a scatter file (MT6735_Android_scatter.txt or MT6582_Android_scatter.txt) designed to flash from a PC over USB.
Because the Huawei Y5II features a removable 2200 mAh battery, you can disconnect the USB cable, pull the battery for 10 to 15 seconds to fully reset the hardware, reinsert it, and reconnect to your PC. Ensure MediaTek VCOM drivers are installed and use a USB 2.0 port directly on your computer.