UPGRADEDOWNLOAD (Spreadtrum Chipset Flasher Tool)

UpgradeDownload is used to write mobile software into hardware modules through serial ports. It only supports packet file (PAC) file. It has the following advantages:
- High efficiency
- Multiple modules can perform downloading at the same.
- Easy operation.
- You need only to connect the module to the serial port and switch to the correct mode.
- The program automatically detects the files and starts downloading. After downloading,
you can manually change to another module and downloading starts again.
UpgradeDownload runs on Windows 2000 above. At least one usable serial port is required
- You can visit Spreadtrum Chipset link Here know more about this integrated circuit.
Figure 1. sample image of tools.

How to use it? If you have (PAC) file firmware, PAC file is extension image that use in this tool example is "Your Firmware.pac". You can insert this file to flash UPGRADEDOWNLOAD tool to your Smartphone.
Example of PAC firmware name with extension W092_S13.pac
Before going to flash your Phone
Be sure you have proper driver totally installed to your PC or laptop
Be sure you have exactly firmware pac same to your phone.
Don't try other firmware PAC may result in Dead boot, afterward only paid tool can reviving it.
BASIC STEPS TO UPGRADE YOUR PHONE:
1. Open UPGRADEDOWNLOAD tool exe
2. Click the Gear icon
3. Other Tabs appear to Browse the Firmware.pac and select it
4. Hit PLAY icon to start the download ,
The tools are ready and waiting for devices
5. Power off the phone (proceed to step no.7)
6. Install the Driver of your Phone (If you have already driver ignore this part)
Refer this TAB, if you don't have driver click here and to download SCI usb2serial flashing Spreadtrum chipset. Make sure you have at least 50% battery charge and good cable connection from PC to device.
In Device manager COM.LTP using Windows OS. You will see the SPRD U2S Diag (COM). that is mean the device and PC is sync and the SPD tool can access the connection to the device.
7. Hold the boot key of device like hold volume down+ volume up together while connecting to PC with battery.
8. The tools start to detect the device and starting to flash your mobile phone and wait until finish flash.
9. After 100% flash Reconnect the battery and restart your phone
10. Some model after flash need to hard reset to prevent long-time waiting in start-up logo

SELECT VERSION DOWNLOAD
All download Extract it with no password

SPD ResearchTool R23.19.5101
Primary Link
DOWNLOAD SPD R22.0.001
Primary link
DOWNLOAD UPGRADEDOWNLOAD_R2.9.9015.rar
Link 1 │ Link 2
Old tools but more setup related to NV-data to modify download setting
DOWNLOAD SPD_Upgrade_Tool_R17.0.0001 .rar
Primary link │ Link 2

SPD Upgrade R17.0.0001
This tool version as far i encountered from low version as known it "bin file packet too small error load', Use this version to prevent error.

DOWNLOAD: Primary link
DOWNLOAD ResearchDownload_2.9.8004

(Special Flasher for Sc7731 Series)

Primary link

Download PAC setup is active to modify support uncheck/check file to download to device even no PAC file inserted support SC7735 SC5735 SC6530 SC6820-SIMLOCK SC7701 SC7702 SC7710G SC8501C SC8501C_samsung SC8810 SC8825 SC8830 SSC6610

DOWNLOAD SPD Upgrade Tool R19.0.0001
Primary link

Some error may help you, If encounter failed when using this tool

Message: Downloading failed: wait input time out
Meaning: A timeout was reached as a result of the flashing process taking too long
Solution: Use the latest version of Research Download tool or Upgrade Download tool.

Message: Failed incompatible partition
Meaning: There was an error flashing to certain partitions.
Solution:
Use the latest version of Research Download tool or Upgrade Download tool.
Flash one item at a time fdl 1 and 2 are constant.

Go to Setting Flash of tool Main page Option. Uncheck all related NV data including Phase-check and calibration.

Message: Checking Baudrate
Meaning: The tool encountered an error initializing flashing
Solution: Change BaudRate in a setting of tools

Message: Failed: Image size is over its partition.
Meaning: One or more of the files in the firmware (pac file) is too large.
Solution: Try a different firmware, Untick traditionally large partitions like a system and user data.

Message: Bin file packet too small error load.
Solution: Try to use the latest version of the tool.
Message: USB device not recognized prompt at system tray after connecting the phone to PC.
Meaning: The PC is having problems communicating with the phone (often due to interruption, hardware or driver problems)

Solution: Try a different USB cord, PC port or PC. Re-installSPD V2 2015.Ensure the phone is switched off before connecting to PC for flashing (take out the battery and slot back in to be sure)
Message: BKF NV Failed
Solution: Un-check the (ProdNV)NV file of setting flash of tool.

How to safe flash your device
Update by emerlits

As far of my experience, It may modify a flash ROM like PAC file before start program your device, The screenshot above will show how to modify PAC file using SPD Upgrade tool by Uncheck/Check file after loading the ROM.
The Checkbox with have to check is the only file will flashing to a device, Must better for safe program is to check the system file only...

⇩Spreadtrum SPD Reset tool
All download Extract it with no password


1. Spreadtrum formater reset tool


This tool is a free tool, How to use it? you need a flash file(pac) load to Bootloader_Files_Maker found on folder and make create, browse the bootloader you make and connect your phone to usb port of pc while holding both volume button, Drivers SPD v2 required
Spreadtrum formater reset tool

2. SPD Diag Reset Tool

This tool was easy, no need to bootmode or files, just connect power off  SPD device to PC detect drivers then hit reset and done ... the phone automatically reboot and factory setting itself (some device remains FRP fuction some is totally erase)

SPD DIAG RESET TOOL