[Motorola Edge 30] Testing33:
Background:

After accidently erasing all the essential GPT partitions via Custom Recovery, my Edge 30 went complete dead blank/ HardBRick (no Fastboot, no EDL mode, no response at all).

To revive it I had to enter phone into EDL mode so that i can flash Blankflash file to restore important partitions (Bootloader/Fastboot mode) and GPT partitions table.

But as EDL points were not available yet on internet so went ahead to find it myself.

So after 1 week of research and collecting all data and then by taking risks did DIY. At last found EDL point.

With these EDL point i have successfully put phone into EDL mode and then flashed Blankflash and booted into Fastboot.

So i am sharing all the information and EDL points from personal practical experience here for benefits of all.

Warning: I am not responsible for any damage that may occur after following this information/guide.

Please be aware. You are here because either you don't have girlfriend or if you have then if in any case she left because you doing below steps then you are on your own.

Steps for EDL Point:

1. Disassemble phone carefully and take out main motherboard.

2. Remove side corner of metal shield or entire metal shield of CPU to expose EDL point.

3. Get one good Digital Multimeter(DM short name throughout these steps).

4. Put this DM into Diode mode then measure voltage at DM's leads ends with another DM(set this DM into DC Volt check range)

5. Measured voltage should be around 2V or little less. (mine was outputting 3V but still i took risk) :

a. If Measured voltage is more than 2V then we can use some 1N4007 diodes and 1K Ohm Resistor.

b. I have added 4 1N4007 diodes(forward biased) and 1K Resistor in series at Red wire end to effectively and safely reduce output voltage

and limit current (i have also tested with these and works fine). ( one 1N4007 diode can reduce output voltage by around 0.5 V)

7. Re-attach Display, Fingerprint, USB flex cables and battery with Motherboard.

8. Insert USB in PC but not in Phone yet.

9. Attach DM's black wire(-) on any good metal ground on Motherboard like metal shield. Attach DM's Red wire(+) with Diodes and Resistor(if needed) or directly on our marked EDL point.

10. Keep attached above Back and Red wires and now insert USB in phone.

11. Now PC should make beep and phone will make 9008 EDL port in PC. You can confirm it in PC's Device Manager.

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12. Now remove Black and Red wires, as now they are not required.

13. Now in this EDL mode you can flash Blankflash file. After Successful flashing, phone will auto reboot into Bootloader mode. (for Blankflash file flash instructions search on internet).

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I have made permanent jumper to EDL point to easy access this point without disassembling the phone again in future for HardBrick scenario. 😉

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Technical details for future reference:

1. Exact name of this EDL point is FORCED_USB_BOOT for Edge 30.

2. Checking FORCED_USB_BOOT and GND in DM's Diode shows Forward biased diode voltage drop reading around 500(0.500V) which shows good indication. Reading around 300 to 1000 or more is good one.

3. FORCED_USB_BOOT pin/point remains in Low state while normal booting process.

4. To put device into EDL mode we have to make this pin High.

5. To Make it High, generally 1.8V has to be given to this point with respect to GND. (approx. 1.5V to 3V Works but remember higher the voltage source more the risk of frying the CPU).

Thanks to @Renate for her knowledge and post on Single Point EDL Test as well which immensely helped in giving direction to my research and also building my confidence for taking risk in completely new area.

Thanks to Lolinet Mirrors for providing Blankflash file.