[General Topics] TechySkills:
I had an Infinix Note 7, Which I format all + downloaded from SP Flash Tool, everything was gone, after 6 Months of Trial and Error, here is How I fixed it.

Standard Flash (With All the Partitions Available):

Prerequisites:

SP Flash Tool, MTK Auth Bypass Tool (Ignore if you have Modified SP Flash Tool) (Search on YT or on Google), Stock Firmware Version you were using before you messed up. (Flash the latest, if you don't remember.)

Open SP Flash Tool and Load the Scatter File.

Select the Flashing Mode as: "Download Only" Tick Everything, then untick: "Preloader, Tkv, Dtbo, and Tranfs".

Open MTK Auth Bypass Tool, select Auth Bypass and insert device by holding Vol up and inserting USB, OR Enable Auth Bypass in Modified SP Flash Tool.

Click Flash in SP Flash Tool, and wait for 3-5 minutes.

When a Tick Logo comes, cross it, unplug your phone, and turn it on.

Your Phone is fixed.

Full Flash (If you messed up and did "Format All + Download", And now, you don't have any Partitions Available):

Prerequisites:

SP Flash Tool, MTK Auth Bypass Tool (Ignore if you have Modified SP Flash Tool) (Search on YT or on Google), Stock Firmware OLDEST VERSION, and the Version you were using before you messed up. (Flash the latest, AKA v356 If you don't remember, but it will Increase the Chance of you not getting your IMEI Back.)

Open SP Flash Tool and Load the Scatter File of the Oldest Firmware.

Select the Flashing Mode as: "Download Only" Tick Everything, then untick: "Tkv, and Tranfs".

Open MTK Auth Bypass Tool, and select Auth Bypass and insert device by holding Vol Up and inserting USB, OR Enable Auth Bypass in Modified SP Flash Tool.

Click Flash in SP Flash Tool, and wait for 3-5 minutes.

When a Tick Logo comes, cross it, unplug your phone, and turn it on.

Skip most of the Setup, Go enable Developer Mode, Allow the Phone to unlock Bootloader and enable USB Debugging.

Download ADB Tools if you haven't already, and open them.

Type: "adb devices" and a popup on phone will come, Click always Allow, and then type: "adb reboot bootloader"

When it reboots to bootloader type: "fastboot devices" If it shows up, well and good, if not, Install Drivers Correctly.

Then Type: "fastboot flashing unlock" and press Vol Up button on Mobile.

Type: "fastboot reboot"

Again, skip most of the setup, when you go to the home screen, Shut the Mobile down.

Open SP Flash Tool and Load the Scatter File of the Firmware you were using, or the Latest one.

Select the Flashing Mode as: "Download Only" Tick Everything.

Open MTK Auth Bypass Tool, and select Auth Bypass and insert device by holding Vol Up and inserting USB, OR Enable Auth Bypass in Modified SP Flash Tool.

Click Flash in SP Flash Tool, and wait for 3-5 minutes.

When a Tick Logo comes, cross it, unplug your phone, and turn it on.

Set it up Correctly, and when you reach Home Screen. Again Go enable Developer Mode, Allow the Phone to unlock Bootloader and enable USB Debugging.

Open ADB Tools, and ype: "adb devices" and a popup on phone will come, Click always Allow, and then type: "adb reboot bootloader"

Type: "fastboot getvar all" and look for "(bootloader) version-baseband:" (If it shows Baseband, You can Flash IMEI. Follow the Thread in Description.)

Viola Your Phone is Fixed.

Standard Flash but stuck in Bootloop (With All the Partitions Available):

Follow this Tutorial, and Disconnect your Battery. Disconnect Battery Tutorial, Follow it only till: 7 minutes and 5 seconds, And then again connect it, Re-assemble it and Follow the 1st Method.

IMEI Fix:

To fix your IMEI, Follow this This Thread: IMEI Fix Thread for Infinix Note 7, X690, X690B, and X690C