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I wanted to upgrade my Android phone (Acer Liquid Ferrari) from 2.2 to 2.3 but it crashed => I can't turn on my phone,

When I do a clean boot (power + vol up + vol down) there are no problem but my phone doesn't reboot

When I want to go into Recovery (power + vol up + cam) there are an error on the checksum

Partition: checksum
 splash: chsum =00000000 OK
 boot:chcksum=8fa17e51 != 0021fde4 **fail**
 recovery:chsum =00000000 OK
 system:chsum =00000000 OK
=====
<<FAIL>>

So when I want to do adb devices I have error device not found. The driver is correctly installed on my computer

How can I launch the recovery mode ?

Thanks

  • You probably should give you device's make and model for more specific answers. – onik Jan 28 '14 at 11:40
  • Acer Liquid Ferrari – general03 Jan 28 '14 at 11:43
  • And your computer is running what OS/version? Devices show up using different device IDs when booted into different "modes" (normal boot/recovery/...), so that might need additional configuration/drivers. – Izzy Jan 28 '14 at 11:48
  • I use Windows OS (but I have also Ubuntu). What kind of driver is necessary in more ? – general03 Jan 28 '14 at 12:18
  • Or are there a Windows application which can help me to do this ? – general03 Feb 4 '14 at 12:17
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I solved my problem by connecting my phone to usb and pressing Vol Up + Cam + Power for await my PC recognize the device. After that, I use Acer Tools to flash my device with the bin of Android

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