Default Did something wrong

Well, it seems, i'm having a big problem:
i wanted to upgrade my fresh MDA Pro to WM6.1 as i wanted to have SDHC-Support and didn't find any really working one with WM5. But: I DIDN'T FULLY Charge the battery, so i received an error as the device couldn't flash the ext-rom. I can still enter the factory-reset-screen. Is the battery going to charge there, too?, so that i can just wait and wait, ultill the battery is going to get full and reflash?

Well, in short:

Wanted to upgrade my device, it failed (maybe due to low battery)
I can still enter the hard-rest / "reset to facory defaults"-screen
if i press any button therem (ie 0 or X) the battery-led links red short and nothing happens.
tried entering bootloader, but nothing happened exept for the battery-ed short red blinking.
does the battery keep charging in the "reset to defaults"-screen?
is it possible to flash this device via SD-Card?

WELL - FIXED IT MYSELF, i was able to enter the ootloader and exectue the task 28at mtty, so i went back to original rom!!

thanks for the info with the tasks and mtty-tutorial

tw, i tried around with the SDHC-Drivers / Files, but didn't find any really working. Which driver works on 8G SDHC Class6-Card?
Current devices :
2x Sierra Wireless Voq Pro., ASUS A620 / Zayo, Palm M505, Palm Zire21 / m100, VPA IV/Universal, SE Xperia X1 & X1i, Vodafone v845, HTC Tattoo, HTC Sensation
Previous devices (broken or sold) :
Yakumo Delta 400, Yakumo Delta (200 mhz model, broken display, disassambled), VPA Compact II/Wizard, HTC S620, Dell Axim X50V, MDA Pro (2x), XDA Diamond, XDA Diamond Pro, Toshiba Portege G900, MDA Vario III/Kaiser, T-Mobile G1 (instant return)
Devices, i sell: SE Xperia X1