If your radio has corrupt calibration data you will see the message
FLASH MEM ERROR
To fix this you either need to either
1. downgrade to the previous version of firmware which you were using.
2. You fix the calibration data
What you need to do to fix the corrupt calibration data depends on how corrupt the data is.
Possibly only the calibration data "signature" byes are corrupt, but potentially the entire calibration table is corrupt.
Using the OpenGD77CPS in the Extras->OpenGD77Support backup your existing calibration data
Download a hex editor, e.g. Hxd, and compare the first 2 bytes of your calibration table, and they should be 0xA0 0x0F
For the GD77 the first 8 bytes should be these
Code: Select all
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00000000 A0 0F C0 12 A0 0F C0 12 E4 .À. .À.ä
Use Hxd to change the first 2 bytes to the correct values, and resave the calibration file with a different name.
Then use the CPS to restore the calibration into the radio
The radio should not start normally.
You should also use the Calibration screen in the Extras menu of the OpenGD77 to check the other values in your calibration data
These are screengrabs of the VHF and UHF calibration data in one of my radios.
All radios will have slightly different values for most of the settings, but the Reference Oscillator Tuning value should be in the range 980 to 1020 and the Tx I & Q values should be similar to my values.
My power values have been calibrated for my radio, and are likely to be significantly different from a radio where the owner has not done their own power calibration, because the factory power calibration seemed extremely inaccurate