Jolla1 boots only into fastboot (recovery impossible). blinks and vibrates only.

asked 2018-02-28 17:05:22 +0300

jualta gravatar image

updated 2018-02-28 23:07:52 +0300

Hi, my Jolla1 is dead suddenly, I have removed battery, bought a new batter etc. but it cannot be switched on using only the battery.

If a plug-in the power cable the phone switches on but vibrates and blinks only endlessly, nothing to see on the screen except if I press and hold power, then the power charging symbol is shown for a second and disappears again. If I press power down the fastboot mode starts, but recovery cannot be started because with the battery only (without power cable) the phone cannot be switched on (looks like no power).

  1. What is the problem? It looks like the battery contacts of the phone are interrupted.

  2. How can I fix this boot-loop?

I have already connect the Jolla to a PC and could send

sudo fastboot -i 0x2931 reboot

but it still shows the same booting problem after the restart...


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Can you charge new battery using external USB charger or dependent upon it being in situ in Jolla 1?

aspergerguy ( 2018-02-28 21:38:42 +0300 )edit

I think it is not a battery problem, the replacement battery is fully charged. It looks like the battery contacts of the phone have a problem because if I press and hold the battery against the contacts there is power to switch on the phone otherwise not.

jualta ( 2018-02-28 23:05:50 +0300 )edit

Clean the contacts, and try to put some paper behind the battery so that it pushes better to the contacts

Nieldk ( 2018-03-01 09:09:48 +0300 )edit

Check if the prongs on the battery connector still spring back into place when pushed.

  • you could try to move them very gently in-and-out to un-stuck them

If the spring is completely broken and the prongs remain in and don't spring back into position:

  • short term solution: you could try cutting a small piece of rubber from a rubber band an slide it into the "hook" shape behind the prongs to push them out.

(I did that on a half broken connector. It managed to revive the battery. But the whole contraption is a lot more sensitive to hits/bumps etc. don't expect the phone to work nicely as a daily driver.)

  • long term solution: take the phone to a repair shop and try to replace the battery connector if they have something compatible in stock.
DrYak ( 2018-03-01 12:07:22 +0300 )edit