hi !
I upgrade my SD52-C225U-HNI tonight with the latest firmware (v2.622.0000000.1.r.171121) 1 hour ago.
When its finished, the camera boot again. All seems to be OK.
After this upgrade, i launch the upgrade of main_mcu_v2.300.0000000.10.r.170926.bin of the SD59... so dumb' !
After this...