PinePhone doesn't boot anymore

[lapin]

Hello,

My PinePhonePro can not still boot.

I have also try to:
- change the battery with a new fresh one (EB-BJ700BBC).
- reload the original battery directly from an external universal charger more than 2 days.
No changes. The PinePhone cannot boot, no bootlader, black screen and green led.

on mask mode.
[lapin@fedora ~]$ lsusb
Bus 003 Device 043: ID 2207:330c Fuzhou Rockchip Electronics Company RK3399 in Mask ROM mode
[lapin@fedora ~]$

However I see nothing appropriate to the pinephonepro via lsblk
[lapin@fedora ~]$ lsblk
[lapin@fedora ~]$

I don't know how to inspect the eMMC from my laptop. Is the bootloader corrupted ? Is the eMMC corrupted ? Is there are a hardware battery problem ?
How to fix the problem?

Please can you help me, i am blocked.

I would love to be able to use the PinePhone that I just by few weeks ago.

Thanks you in advance,
Best Regards,