If the book is not flashed (the firmware process stops with red errors in the output window, or it just freezes and the book does not restart):
Without disconnecting the book from USB, again hold the diamond button (OK)
Find a hole near the microUSB port on the book - there is a reset button in it
Press it with something (I press a toothpick at which the end is broken off), note that the button can be located only at half of the hole
Wait 5 seconds, the book should reboot into firmware mode again.
The reader will remain in the firmware mode for an arbitrarily long time, and you can disconnect it and connect it to another PC for firmware. To bring the reader out of the firmware mode - press the reset button again (only without pinching the “diamond”).
Error may occur with poor USB contact. Try to fix, reinstall the cable in the book (do not shake it too much!), Either plug it into another USB connector on the computer (note that you may need to reinstall the drivers), or flash it on another computer. If this does not help, find another USB cable.
And you noticed that after a full screen update, the text is first sharp and sharp for a moment, and then becomes “in shades of gray”, apparently, after adding “sixteen grayscale”. Is there a screen reader driver in nature that does not use its grayscale display capabilities?
disik, It is rather while the screen is still under voltage, the text is darker. Then the reader goes into power saving mode until the next page turning, and does not apply voltage to the screen.
Gentlemen, can anyone remember more) got a copy, very strange. Before that, there were two books, switching on - a long press of the button on the side, and on this one - a short press of the button on the side or a long one in the center. Sometimes it hangs, because of this, I wanted to reflash, but when connected, the computer does not see either in the file transfer mode or in the firmware mode (I'm not sure that the device enters it at all). And the plastic material is completely different ... Maybe someone has an idea what to try to reflash?