[Android General] scoobysnackster:
Fixing F1 play in boot loop.

Editing my reply since I managed to fix the boot loop issue on Umidigi F1 Play for the third time.

1.Make sure you have SP Flash tool installed. If your use Windows, you'll need to install the additional drivers.

2.Get the stock rom file from Umidigi's website, its on their community page. Make sure you get the right stock rom version for F1 play and not F1.

3.Extract the Stock Rom archived file which you have downloaded. In this folder you will find three files that you need. 1. Scatter file 2.Boot file and 3. System file.

4.Your phone shouldn't be connected to the PC, ensure the battery has sufficient power.

5.Click the Download tab on SP Flash tool, select the Scatter file from the extracted folder. You will notice, all the boxes get checked. Please uncheck all the boxes- make sure to do this, failing to do this will result in bricking the phone where it may not power up again. I've already bricked one. So please be careful.

6.Select only two boxes- boot and system. Make sure you click on them and select the respective boot and system files from the extracted folder of stock rom.

7.Click download.... then pressing the power button on your phone( the phone must be powered off) and before it power ups again connect to the PC.

When you see the bar at the bottom of SP Flash tool- Download tab turn red, release the power button on the phone immediately.

If you read the instructions from the Umidigi community page from where you download the stock rom.. they instruct you to keep the power button pressed, connect to PC and release the power button when you see the bar starting to turn red.

At this stage the flashing will commence and when successful disconnect phone.

8.Press Vol - down button plus power button-

Phone enters recovery mode with a menu in what seems like Mandarin- use vol down button to navigate down to the last line of the menu and press power button.

The next screen says rebooting.

9. Press power button to turn on phone- you are back to square one- a factory reset.

You might want to use SP Flash to flash the twrp f1 play recovery image.

Install Fdroid- then install the app you find on Fdroid called Power App. Power App's menu has a reboot in recovery option which boots the phone in twrp.

My two cents, try at your own risk, thread your own path. hope it helps. Cheers

Reply to:

Hello

I have UmiDigi F1 Play stuck in a boot loop.

So, the phone was working fine on "UMIDIGI F1 Play V1.0_20190903 ROM - SPFT + OTA release" updated via OTA. One day after a normal restart the phone went into a boot loop (UmiDgi logo, <thinking>, black screen (displayed not turned off), <thinking>, UmiDigi logo, and so on).

So, these are the steps I took so far with no luck:

1. Managed to get into recovery (pressing repeatedly Vol-Up while UmiDigi logo comes on), and did factory settings restart, still boot loop. "Mount /system" still boot loop. "Wipe cache", still boot loop. Also at times when I got into recovery browsing through the options was super slow - one pres vol-up or vol-down and it took three seconds to move to the next option in the menu.

2. Reflashed in Download only mode the ROM "UMIDIGI F1 Play V1.0_20190903 ROM - SPFT + OTA release" via SP Tools, still boot loop.

3. Downgraded using Flash firmware mode to the oldest available ROM - "UMIDIGI F1 Play V1.0_20190409 ROM - SPFT release", still boot loop.

4. Formatted everything including bootloader, flashed again the newest "UMIDIGI F1 Play V1.0_20190903 ROM - SPFT + OTA release", restored IMEIs, still boot loop.

4. Occasionally the phone loaded the system, but after system restart there is still a boot loop. Moreover, in the top right corner there are two lines saying "TEE: <Chinese symbols> Google: <Chinese symbols>" visible at all times in Android, despite correct IMEIs being present.

5. Flashed again the newest "UMIDIGI F1 Play V1.0_20190903 ROM - SPFT + OTA release" but this time I've read somewhere to press and hold both vol-up and vol-down before connecting the phone to the computer to supposedly enter safe mode. It only resulted in displaying single green pixel in the top-left corner at all times in boot loop.

6. I've unlocked the bootloader via Developer options in Android when it miraculously loaded. Tried to flash TWRP via ADB - the phone displays that bootloader is locked. Tried flashing TWRP according to the instructions on the UmiDigi forum via SP Tools and there is a text under UmiDigi boot logo saying "Red state <you're using custom recovery use OEM recovery this will not start>". The text is displayed for a very short period of time and the phones goes again into a boot loop.

So to sup up:

- the phone has the newest stock ROM "UMIDIGI F1 Play V1.0_20190903 ROM - SPFT + OTA release"

- is stuck in boot loop (UmiDigi logo, <thinking>, black screen (displayed not turned off), <thinking>, UmiDigi logo, and so on)

- in the boot loop there is single green pixel in the top left corner at all times

- when the system occasionally loads there are two lines visible at all times saying "TEE: <Chinese symbols> Google: <Chinese symbols>"

How do I fix that guys? Any ideas?