Sigma Plus is a software solution for servicing Huawei / Honor, Moto, ZTE, Vivo, Samsung, Alcatel and other phones.
This license is a digital product that allows you to use Sigma Plus software without a dongle or a box.
Access valid for 3 days.
The 3-day license can only be bound to 1 PC, with no changing option.
Main Features
- Multibrand and multi-platform tool
- Reset FRP, Huawei ID and more
- Write / Backup Firmware
- Repair IMEI
- Direct decoding and Code Generation
- and more…
Advantages
- A service solution with over 20 years of history
- Access to 50+ service features
- 14 000+ models are supported
- Clients in multiple countries all over the world
- Multi-lingual and multi-channel client support 24/7, user manuals and video instructions
- Huawei, Honor, Samsung, Moto, Alcatel, Vivo, Tecno and other brands are supported
- Support for Qualcomm, MediaTek, HiSilicon, TI, Unisoc and other platforms
HiSilicon Features
Devices based on HiSilicon Kirin 710 / Kirin 710F / Kirin 710A / Kirin 810 / Kirin 820 / Kirin 970 / Kirin 980 / Kirin 985 / Kirin 990 / Kirin 990E / Kirin 990 5G processors:
Direct Unlock
- SOFTWARE TESTPOINT (servicing phones without disassembling)
- Remove Huawei ID
- Read OEM INFO
- REMOVE FRP
- Board (factory) flash files flashing
- Write original Update.app files
- ENABLE DOWNGRADE
- Write OEM INFO
- Load Fastboot / Backdoor open
- Backup/Restore Huawei IMEI and Network Lock
- Repair “Chip is damaged”
- Huawei ID remove support for Huawei P40/P40 Pro/ Mate 30 Pro series
- “Backup chip data…” feature
Service
- SOFTWARE TESTPOINT (service without disassembling)
- Direct network unlock
- Remove Huawei ID
- REMOVE FRP
- Get full device info
- Write Battery serial number
Repair
- Repair and Change Vendor / Country / Model
- Read / Write OEM INFO
- Rescue mode entering
- Load Fastboot / Backdoor open
- Write original Huawei board (factory) flash files in *.xml or Sigma format
Write Flash
- Write original FullOtaUpdate / SD_Update files
- Enable Downgrade / Change firmware
- Flash in Upgrade or Fastboot mode
Use Huawei secure data (certificate) and Chip Data files made by other Sigma smart cards
- Huawei certificate files are intended for working with IMEI codes of Huawei phones.
- Restore your phone’s IMEI.
- Share your Huawei certificate files / Use shared Huawei certificate files.
- Copy the IMEI of Phone 1 and restore it to Phone 2 (in case phone 1 is damaged).
- Replace an old active mobile with the new one saving IMEI number.
- Backup and restore original IMEI(s) and network lock state.
Use certificates/Chip Data from phones based on other platforms
Platforms with compatible certificates: Kirin 710 / 710A / 810 / 820 / 980 / 985 / 990 / 990 5G
Read firmware from HiSilicon device
- Save the firmware from devices with rare version/localization.
- Read firmware from one phone and write it to the other one.
- Users may share the firmware.
Direct unlock (Manufacture mode *#*#2846579#*#*)
- No root required
- Remove SIM LOCK
- Huawei Bootloader Password Reading
Repair IMEI (Manufacture mode *#*#2846579#*#*)
- No root required (old security versions)
Provider (vendor/country) repair
Remove Factory Reset Protection (FRP):
- Reset FRP for new Huawei smartphones.
Remove Huawei ID
- Remove Huawei ID lock for new Huawei smartphones.
- You can check your model on the manufacturer’s website.
MTK Features
Remove FRP for the large group of Samsung devices
- Popular models supported.
- A/E/F/G/J/N/M/P/S/T/X series supported.
- Android 7-12 supported, no testpoint is required.
- Latest security versions.
Bypass boot authorization
- Allows you to disable security and service devices with any security configuration.
- Allows to service numerous latest MTK devices.
- The solution is based on bootrom Security Bypass Exploits. The following CPUs are supported:
- MT6572, MT6580, MT6582, MT6735, MT6737, MT6739, MT6755, MT6757, MT6761, MT6763, MT6765, MT6768, MT6771, MT6785, MT6799, MT6873, MT8127, MT8163, MT8173, MT8695.
Repair IMEI for VIVO MTK devices
- Support for the latest devices of V, X, Z series and more.
REMOVE Huawei ID for MTK devices
- Full and correct Huawei ID removal.
- “Huawei ID”-based phone services remain working after the operation.
- “Huawei ID”-lock will not return after reflashing.
- Full support for MTK Devices with eMMC and UFS flash chips.
- Backup and Restore NV – Calibrations.
Unlock, Remove FRP and other features using SPFT method
- Motorola, Alcatel, Huawei, and all other MTK devices.
- Non-secure MTK smartphones are supported.
- Ability to perform Remove FRP operation for unknown MTK smartphones using own Download agent.
Unlock Code Calculation by IMEI:
- Supported models: Alcatel / Motorola / Orange / TCL / Vodafone / T-Mobile / TMN / ZTE.
- Internet connection is not required for code calculation.
- Standalone solution, doesn’t require server codes or credits.
- No limit for the number of codes calculated per day.
Flash/Backup
- Flash files are stored in *.skf format.
- Read phone’s firmware version.
- COM port speed – up to 921600 bps
- Read & Restore backup
- Upgrade firmware (restore a backup from one phone and write it to the other)
- Upgrade and downgrade firmware version
- Huge flash files archive
- Correct firmware upgrade for Alcatel models (works with CUST PARA area)
- Smart (fast) write mode
- Simple write mode
- Works with NAND and NOR flash chip type
IMEI
- Repair IMEI, including models with more than one SIM.
- Repair Software IMEI (phones with IMEI located in a file system).
- Repair Hardware IMEI (phones with IMEI located in OTP area flash chip).
- Repair IMEI for Huawei models with new security type.
- Repair Blank IMEI
Repair Security Area
- Repair Security Area for Alcatel cell phones (flashing method).
- Diagnostics and Security Area Repair for Huawei cell phones (models with new security type).
Work with Phone’s File System
- Works with FFS through boot mode (allows to export information from the phone’s FFS zone even if the handset is dead, but the file system of the set is not damaged).
- Works with network calibrations (backup and restore).
- Works with phone’s flex (backup and restore).
- Phone book backup.
- Format file system.
Qualcomm Features
Remove FRP for the large group of Samsung devices
- Popular models supported.
- A/E/F/G/J/N/M/P/S/T/X series supported.
- Android 7-12 supported, no testpoint required.
- Latest security versions.
Qcom AUTODETECT feature
- Ability to select different loaders for phones with the same IDs.
- Biggest loaders database for almost all popular brands on the market: Oppo, Blu, Vivo, Xiaomi, Asus, Lenovo, ZTE, Wiko, Nokia, Hisense, and more.
- No need to download the loaders manually.
- Sigma detects the loader that fits your phone, downloads it from the database, and sends it to the phone automatically.
- One-click solution for phones connected in EDL mode.
- Potentially, you can add service support for 1000 or more phone models.
Direct unlock
- Acer, Alcatel, ZTE, Huawei, Sony, Moto smartphones, phones, and tablets are supported.
- Unlock via USB cable.
- Heuristic method which allows the user to unlock the device even if it has an unknown firmware version.
- Reset the counter of code entry attempts.
- Support for smartphones with Android and Firefox OS.
- Support for Qualcomm Hexagon smartphones.
- Locked bootloader.
- Huawei smartphones with a locked bootloader.
- Read / Reset botloader Unlock Password.
- Relock Bootloader without any traces left in the firmware.
Repair security area
- Alcatel smartphones:
- Repair corrupted security data files.
- Huawei smartphones:
- Repair security area
- Enable firmware downgrading
- Sony Android smartphones
Read all types of codes
- Alcatel, Motorola, Huawei smartphones:
- NCK (Network Control Key) code
- NSCK (Network Subset Control Key) code
- SPCK (Service Provider Control Key) code
- CCK (Corporate Control Key) code
- PCK (Personalization Control Key) code
- ZTE smartphones:
- NCK code (Old and New Security)
- Repair corrupted security data file
- Show the number of wrong code entering attempts.
Repair IMEI
- Motorola smartphones
- Sony smartphones
- ZTE phones
- ZTE smartphones
- Huawei smartphones
- Alcatel smartphones
Unlock code calculation by IMEI
- Supported phone brands: Alcatel, ZTE, TMN, T-Mobile, Motorola, and other brands.
- Internet connection is not required for code calculation.
- Standalone solution that doesn’t require server codes or credits.
- No limit for the number of codes calculated per day.
Enable Diagnostic port
- This feature is supported for some Qualcomm-based devices.
Factory Reset Protection Remove (FRP)
- FRP reset for new Huawei/Alcatel/Moto smartphones.
- Remove Huawei ID/Remove FRP service features.
Write firmware
- Write firmware feature for Qualcomm Alcatel smartphones.
- REPAIR feature for bricked Huawei smartphones based on Qcom that still can be detected in the System as Qualcomm HS-USB QDLoader 9008.
Unisoc / TI OMAP Features
Supported Unisoc CPUs
- SC7731E
- SC9832E
- SC9850
- SC9863A
- T310
- T606
- T610
- T612
- T616
- T618
Sigma Plus License vs Sigma Plus Dongle / Box
This table will help you choose what solution fits your needs best.
Feature Sigma Plus License Sigma Plus Dongle / Box Supported Models & Features ✅ Same for both solutions: Full software access. Internet Connection Required for all operations. Required for some operations. PC Changing Policy Limited to a specific number of PC changes* —perfect for those who prefer using 1-2 PCs
*no more than once every 24 hrs, within your license limit.No PC change limits
—ideal for professionals who prefer using portable hardware and working on any available PCAccess Plans ⏳ Flexible plans:
choose a license for 3 days, 1 month, or 3 months to get your access anytime⏳ Longer-term plans:
comes with 1-year access extended with a 6-month or 1-year activation.Huawei Authorizations 50 per day / 1,500 per month —ideal for light-to-medium workloads 100 per day / 3,000 per month —perfect for high-volume servicing Approx. Monthly Cost Ideal for short distances: a flexible option with instant access, perfect for immediate needs and quick starts. Perfect for long distances: A cost-effective choice over time, especially suited for consistent, high-volume use. Shipping ☁️ Digital Solution:
Once your order is processed, you can download and use the software the same day, no matter where you are.Hardware (dongle or box)
worldwide delivery – shipped to your location. Delivery time depends on the shipping method you choose.How to buy
- First, create a personal account on sigmakey.com
- Buy the license you prefer on gsmserver.com
While placing your order, please indicate the email you used to create your account (step 1) - When we process your order, you will receive an email with detailed instructions.
How to start using
- Download the latest version of Sigma Plus software (download here)
- Run Sigma Plus software
- Log in with email and password you used for your account on sigmakey.com.
- Done! Now you can use Sigma Plus software.
PC changing policy
The license is linked to your computer, and the number of PC changes is limited.
PC changes are allowed no more than once every 24 hours, within your license limit:
- Sigma Plus License for 3 days – 1 PC only, no changing
- Sigma Plus License for 1 month – 3 PC changes
- Sigma Plus License for 3 months – 9 PC changes
Supported OS
- Windows XP 32/64-bit
- Windows Vista 32/64-bit
- Windows Server 2003 32/64-bit
- Windows 7 32/64-bit
- Windows Server 2008
- Windows 10
- Windows 11
Detailed information on the further use of the digital product will be sent to your email, specified during registration, when we confirm your payment and process your order.
* The developer provides support only for those phones which are on the list of supported. Not all servicing features can be applied to some supported models, due to differences of hardware/software versions.











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