1 Why is there a red cross on screen?
why doesnt any batterry work and have a red cross onscreen?
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Please try this sequence, it will take 4h15m your BB must remain connected to a known-good wall charger (not PC USB):
With the battery inside, connect your BB to the wall charger
Leave it alone for 2 hours, no matter what the LED or the display does
Remove the battery
Wait 15 minutes
Insert the battery
Wait another 2 hours, no matter what the LED or the display does
This has been known to "kick start" some BBs.
Hope it helps.
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