[GUIDE] Flash ROMs On The Go (With Another Phone) (Without PC)

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nishant_713

Senior Member
Jul 6, 2011
597
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India
PREREQUISITES -

1. Two phones (one on which you want to flash rom/img, and other you'll use as host)(root is not required on host phone)

2. USB-C to USB-C cable, or USB-C to USB-A with OTG adaptor.

3. Some brain and patience.


PROCEDURE -

1. Install the app called "Bugjaeger" on an android phone you're going to use as host (root is not required)

2. Boot the phone to fastboot and connect the phone to host phone using USB-C to USB-C.

3. Open Bugjaeger app and go to the last tab.

Screenshot_2022-11-13-20-41-38-18_e9df68518e6a1ad3b48efd890143f295.jpg


4. You'll see your device listed in the app, so select it from the list.

5. Thereafter press the bottom right blue button.

IMG_20221113_220709.jpg


6. This will open up a terminal like interface, here type the command for flashing the boot img. Just type "fastboot flash boot" thereafter from the top, select the icon that looks like file attachment and select the boot img file.. No need to type the file location for file, it'll automatically be appended.

Screenshot_2022-11-13-20-45-22-37_e9df68518e6a1ad3b48efd890143f295.jpg


7.Press the button on the right and wait for the boot img to be flashed.

8. After it is done, boot to recovery, and select adb sideload option from recovery.

9. The phone should again be detected in the Bugjaeger app and be listed. Ensure its selected.

10. Now on the host phone, scroll to the bottom on the same tab to the last option that says "Pick file and perform sideload"

Screenshot_2022-11-13-20-44-41-79_e9df68518e6a1ad3b48efd890143f295.jpg


11. After selecting the ROM zip file, wait for it to be flashed, the progress will be displayed on the host phone, it will go till about 47% before the process is completed.

IMG_20221113_222258.jpg


12. Reboot the phone and enjoy new ROM


CREDITS
All credit goes to the amazing developer @bugjaeger who developed this amazing app, allowing us to do such crazy things without the need of a computer.
 
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    PREREQUISITES -

    1. Two phones (one on which you want to flash rom/img, and other you'll use as host)(root is not required on host phone)

    2. USB-C to USB-C cable, or USB-C to USB-A with OTG adaptor.

    3. Some brain and patience.


    PROCEDURE -

    1. Install the app called "Bugjaeger" on an android phone you're going to use as host (root is not required)

    2. Boot the phone to fastboot and connect the phone to host phone using USB-C to USB-C.

    3. Open Bugjaeger app and go to the last tab.

    Screenshot_2022-11-13-20-41-38-18_e9df68518e6a1ad3b48efd890143f295.jpg


    4. You'll see your device listed in the app, so select it from the list.

    5. Thereafter press the bottom right blue button.

    IMG_20221113_220709.jpg


    6. This will open up a terminal like interface, here type the command for flashing the boot img. Just type "fastboot flash boot" thereafter from the top, select the icon that looks like file attachment and select the boot img file.. No need to type the file location for file, it'll automatically be appended.

    Screenshot_2022-11-13-20-45-22-37_e9df68518e6a1ad3b48efd890143f295.jpg


    7.Press the button on the right and wait for the boot img to be flashed.

    8. After it is done, boot to recovery, and select adb sideload option from recovery.

    9. The phone should again be detected in the Bugjaeger app and be listed. Ensure its selected.

    10. Now on the host phone, scroll to the bottom on the same tab to the last option that says "Pick file and perform sideload"

    Screenshot_2022-11-13-20-44-41-79_e9df68518e6a1ad3b48efd890143f295.jpg


    11. After selecting the ROM zip file, wait for it to be flashed, the progress will be displayed on the host phone, it will go till about 47% before the process is completed.

    IMG_20221113_222258.jpg


    12. Reboot the phone and enjoy new ROM


    CREDITS
    All credit goes to the amazing developer @bugjaeger who developed this amazing app, allowing us to do such crazy things without the need of a computer.