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- 1. Recovering from a failed Firmware Upgrade
- 2. Make sure your oyo has power
- 3. Can you hard reboot your oyo?
- 4. Replace the faulty firmware with a valid one
- 4.1 ~MarkS — 20 April 2013, 20:02
- 4.2 ~keltiek — 20 July 2013, 18:44
- 4.3 ~Jesus — 11 May 2014, 09:22
- 4.4 ~link building — 18 July 2014, 14:01
- 4.5 ~crorkz matz — 01 August 2014, 19:51
- 4.6 ~Witas — 28 August 2014, 22:02
- 4.7 ~Lisiy — 31 August 2014, 11:16
- 4.8 ~matz crorkz — 23 November 2014, 19:40
- 4.9 ~crorkz linkz — 16 January 2015, 03:36
- 4.10 ~Krisztina — 16 December 2015, 19:09
- 4.11 ~Kaiden — 28 January 2016, 00:08
If after a firmware upgrade your oyo seems to freeze during the boot process and just stops reacting to any key press, chances are that the firmware upgrade did not work. This will happen if you start experimenting with your own modified firmwares and you make a mistake.
Fortunately, there are a number of things you can try to resurrect your oyo. The idea is to re-upgrade the oyo with a different firmware that you know is valid.
After a failed upgrade, your oyo might get stuck in a state that will quickly drain the battery. This could prevent your oyo from booting or could cause a new firmware upgrade to fail. You should therefore first of all connect your oyo to a power source.
Try rebooting the oyo with a hardware reset and put it into firmware upgrade mode.
To do that, press the hardware reset button on the back of the oyo for 15 seconds, then press the back and forward keys, then the power key. You should see the battery sign appear (remember: your oyo should be connected to a power source!). It should then boot into 'os upgrade' mode.
If that does not work even after a couple of retry, the method explained in this page does not apply to you.
If you can hard reboot the oyo into 'os upgrade' mode, you can replace the faulty firmware with a valid one (see the next step below).
For that, you will need a micro sd card.
Apparently the oyo follows an order of priority when looking for a firmware upgrade: it first looks on the micro sd card, then on the internal memory. So even if you copied the faulty firmware to the internal memory and cannot remove it from there since your oyo does not boot, you can still make a new upgrade using a firmware located on the micro sd card.
So just copy a valid firmware (qdutil directory) to the root of the micro sd card (eventually replacing the faulty one), insert the card into your oyo and reboot it into 'os upgrade' mode using the method explained above.