Have you tried to disable the watchdog with the flasher? Don't know if all flags from N900 flasher are the same for N9/N950. This could prevent a boot loop: Code: --set-rd-flag=no-lifegard-reset These could be also interesting: no-omap-wd no-ext-wd http://wiki.maemo.org/R%2526D_mode
--set-rd-flag=no-lifegard-reset
flasher -F img.bin --set-rd-flag=no-lifeguard-reset,no-omap-wd,no-ext-wd
That statement worried me as just flashing once with "DFL_61_HARMATTAN_40.2012.21-3_PR_RM680" was quite enough as that firmware was hard enough to source. With regards to trying R&D mode, enable with: HTML Code: --enable-rd-mode --set-rd-flags=no-lifeguard-reset and disable with: HTML Code: --disable-rd-mode In what state of charge is BL-4D battery as at least can be charged outside device if necessary rather than using flasher?
--enable-rd-mode --set-rd-flags=no-lifeguard-reset
--disable-rd-mode
State of battery? flasher -i should show you / and probably charge also, but maybe you need to give full flash command (kernel is enough) to charge, there is a dedicated thread here on tmo. Do you have also the eMMC image? Then at least worth atry is full flash eMMC and firmware wiping all.
flasher -i
flasher -F img.bin --enable-rd-mode --set-rd-flags=no-lifeguard-reset
flasher -f -F img.bin --erase-user-data=secure
flasher -f -F img.bin -F emmc.bin --flash-only-mmc
flasher -F img.bin --disable-rd-mode
flasher -F img.bin --reboot